forked from OSchip/llvm-project
980 lines
32 KiB
LLVM
980 lines
32 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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; Instcombine should be able to eliminate all of these ext casts.
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declare void @use(i32)
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declare void @use_vec(<2 x i32>)
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define i64 @test1(i64 %a) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[B:%.*]] = trunc i64 [[A:%.*]] to i32
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; CHECK-NEXT: [[C:%.*]] = and i64 [[A]], 15
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; CHECK-NEXT: call void @use(i32 [[B]])
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; CHECK-NEXT: ret i64 [[C]]
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;
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%b = trunc i64 %a to i32
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%c = and i32 %b, 15
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%d = zext i32 %c to i64
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call void @use(i32 %b)
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ret i64 %d
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}
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define <2 x i64> @test1_vec(<2 x i64> %a) {
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; CHECK-LABEL: @test1_vec(
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; CHECK-NEXT: [[B:%.*]] = trunc <2 x i64> [[A:%.*]] to <2 x i32>
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; CHECK-NEXT: [[D:%.*]] = and <2 x i64> [[A]], <i64 15, i64 15>
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; CHECK-NEXT: call void @use_vec(<2 x i32> [[B]])
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; CHECK-NEXT: ret <2 x i64> [[D]]
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;
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%b = trunc <2 x i64> %a to <2 x i32>
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%c = and <2 x i32> %b, <i32 15, i32 15>
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%d = zext <2 x i32> %c to <2 x i64>
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call void @use_vec(<2 x i32> %b)
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ret <2 x i64> %d
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}
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define <2 x i64> @test1_vec_nonuniform(<2 x i64> %a) {
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; CHECK-LABEL: @test1_vec_nonuniform(
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; CHECK-NEXT: [[B:%.*]] = trunc <2 x i64> [[A:%.*]] to <2 x i32>
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; CHECK-NEXT: [[D:%.*]] = and <2 x i64> [[A]], <i64 15, i64 7>
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; CHECK-NEXT: call void @use_vec(<2 x i32> [[B]])
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; CHECK-NEXT: ret <2 x i64> [[D]]
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;
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%b = trunc <2 x i64> %a to <2 x i32>
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%c = and <2 x i32> %b, <i32 15, i32 7>
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%d = zext <2 x i32> %c to <2 x i64>
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call void @use_vec(<2 x i32> %b)
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ret <2 x i64> %d
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}
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define <2 x i64> @test1_vec_undef(<2 x i64> %a) {
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; CHECK-LABEL: @test1_vec_undef(
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; CHECK-NEXT: [[B:%.*]] = trunc <2 x i64> [[A:%.*]] to <2 x i32>
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; CHECK-NEXT: [[D:%.*]] = and <2 x i64> [[A]], <i64 15, i64 0>
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; CHECK-NEXT: call void @use_vec(<2 x i32> [[B]])
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; CHECK-NEXT: ret <2 x i64> [[D]]
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;
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%b = trunc <2 x i64> %a to <2 x i32>
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%c = and <2 x i32> %b, <i32 15, i32 undef>
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%d = zext <2 x i32> %c to <2 x i64>
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call void @use_vec(<2 x i32> %b)
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ret <2 x i64> %d
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}
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define i64 @test2(i64 %a) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[B:%.*]] = trunc i64 [[A:%.*]] to i32
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; CHECK-NEXT: [[D1:%.*]] = shl i64 [[A]], 36
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; CHECK-NEXT: [[D:%.*]] = ashr exact i64 [[D1]], 36
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; CHECK-NEXT: call void @use(i32 [[B]])
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; CHECK-NEXT: ret i64 [[D]]
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;
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%b = trunc i64 %a to i32
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%c = shl i32 %b, 4
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%q = ashr i32 %c, 4
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%d = sext i32 %q to i64
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call void @use(i32 %b)
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ret i64 %d
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}
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define <2 x i64> @test2_vec(<2 x i64> %a) {
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; CHECK-LABEL: @test2_vec(
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; CHECK-NEXT: [[B:%.*]] = trunc <2 x i64> [[A:%.*]] to <2 x i32>
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; CHECK-NEXT: [[D1:%.*]] = shl <2 x i64> [[A]], <i64 36, i64 36>
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; CHECK-NEXT: [[D:%.*]] = ashr exact <2 x i64> [[D1]], <i64 36, i64 36>
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; CHECK-NEXT: call void @use_vec(<2 x i32> [[B]])
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; CHECK-NEXT: ret <2 x i64> [[D]]
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;
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%b = trunc <2 x i64> %a to <2 x i32>
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%c = shl <2 x i32> %b, <i32 4, i32 4>
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%q = ashr <2 x i32> %c, <i32 4, i32 4>
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%d = sext <2 x i32> %q to <2 x i64>
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call void @use_vec(<2 x i32> %b)
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ret <2 x i64> %d
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}
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define <2 x i64> @test2_vec_nonuniform(<2 x i64> %a) {
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; CHECK-LABEL: @test2_vec_nonuniform(
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; CHECK-NEXT: [[B:%.*]] = trunc <2 x i64> [[A:%.*]] to <2 x i32>
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; CHECK-NEXT: [[D1:%.*]] = shl <2 x i64> [[A]], <i64 36, i64 37>
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; CHECK-NEXT: [[D:%.*]] = ashr <2 x i64> [[D1]], <i64 36, i64 37>
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; CHECK-NEXT: call void @use_vec(<2 x i32> [[B]])
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; CHECK-NEXT: ret <2 x i64> [[D]]
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;
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%b = trunc <2 x i64> %a to <2 x i32>
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%c = shl <2 x i32> %b, <i32 4, i32 5>
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%q = ashr <2 x i32> %c, <i32 4, i32 5>
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%d = sext <2 x i32> %q to <2 x i64>
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call void @use_vec(<2 x i32> %b)
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ret <2 x i64> %d
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}
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define <2 x i64> @test2_vec_undef(<2 x i64> %a) {
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; CHECK-LABEL: @test2_vec_undef(
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; CHECK-NEXT: [[B:%.*]] = trunc <2 x i64> [[A:%.*]] to <2 x i32>
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; CHECK-NEXT: [[D1:%.*]] = shl <2 x i64> [[A]], <i64 36, i64 0>
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; CHECK-NEXT: [[D:%.*]] = ashr <2 x i64> [[D1]], <i64 36, i64 0>
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; CHECK-NEXT: call void @use_vec(<2 x i32> [[B]])
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; CHECK-NEXT: ret <2 x i64> [[D]]
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;
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%b = trunc <2 x i64> %a to <2 x i32>
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%c = shl <2 x i32> %b, <i32 4, i32 undef>
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%q = ashr <2 x i32> %c, <i32 4, i32 undef>
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%d = sext <2 x i32> %q to <2 x i64>
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call void @use_vec(<2 x i32> %b)
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ret <2 x i64> %d
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}
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define i64 @test3(i64 %a) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[B:%.*]] = trunc i64 [[A:%.*]] to i32
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; CHECK-NEXT: [[C:%.*]] = and i64 [[A]], 8
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; CHECK-NEXT: call void @use(i32 [[B]])
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; CHECK-NEXT: ret i64 [[C]]
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;
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%b = trunc i64 %a to i32
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%c = and i32 %b, 8
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%d = zext i32 %c to i64
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call void @use(i32 %b)
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ret i64 %d
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}
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define i64 @test4(i64 %a) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[B:%.*]] = trunc i64 [[A:%.*]] to i32
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; CHECK-NEXT: [[C:%.*]] = and i64 [[A]], 8
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; CHECK-NEXT: [[X:%.*]] = xor i64 [[C]], 8
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; CHECK-NEXT: call void @use(i32 [[B]])
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; CHECK-NEXT: ret i64 [[X]]
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;
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%b = trunc i64 %a to i32
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%c = and i32 %b, 8
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%x = xor i32 %c, 8
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%d = zext i32 %x to i64
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call void @use(i32 %b)
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ret i64 %d
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}
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define i32 @test5(i32 %A) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 [[A:%.*]], 16
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; CHECK-NEXT: ret i32 [[TMP1]]
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;
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%B = zext i32 %A to i128
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%C = lshr i128 %B, 16
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%D = trunc i128 %C to i32
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ret i32 %D
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}
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define i32 @test6(i64 %A) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: [[TMP1:%.*]] = lshr i64 [[A:%.*]], 32
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; CHECK-NEXT: [[D:%.*]] = trunc i64 [[TMP1]] to i32
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; CHECK-NEXT: ret i32 [[D]]
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;
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%B = zext i64 %A to i128
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%C = lshr i128 %B, 32
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%D = trunc i128 %C to i32
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ret i32 %D
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}
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; Test case where 'ashr' demanded bits does not contain any of the high bits,
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; but does contain sign bits, where the sign bit is not known to be zero.
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define i16 @ashr_mul_sign_bits(i8 %X, i8 %Y) {
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; CHECK-LABEL: @ashr_mul_sign_bits(
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; CHECK-NEXT: [[A:%.*]] = sext i8 [[X:%.*]] to i16
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; CHECK-NEXT: [[B:%.*]] = sext i8 [[Y:%.*]] to i16
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; CHECK-NEXT: [[C:%.*]] = mul nsw i16 [[A]], [[B]]
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; CHECK-NEXT: [[D:%.*]] = ashr i16 [[C]], 3
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; CHECK-NEXT: ret i16 [[D]]
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;
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%A = sext i8 %X to i32
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%B = sext i8 %Y to i32
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%C = mul i32 %A, %B
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%D = ashr i32 %C, 3
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%E = trunc i32 %D to i16
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ret i16 %E
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}
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define i16 @ashr_mul(i8 %X, i8 %Y) {
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; CHECK-LABEL: @ashr_mul(
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; CHECK-NEXT: [[A:%.*]] = sext i8 [[X:%.*]] to i16
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; CHECK-NEXT: [[B:%.*]] = sext i8 [[Y:%.*]] to i16
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; CHECK-NEXT: [[C:%.*]] = mul nsw i16 [[A]], [[B]]
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; CHECK-NEXT: [[D:%.*]] = ashr i16 [[C]], 8
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; CHECK-NEXT: ret i16 [[D]]
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;
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%A = sext i8 %X to i20
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%B = sext i8 %Y to i20
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%C = mul i20 %A, %B
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%D = ashr i20 %C, 8
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%E = trunc i20 %D to i16
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ret i16 %E
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}
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define i32 @trunc_ashr(i32 %X) {
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; CHECK-LABEL: @trunc_ashr(
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; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 [[X:%.*]], 8
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; CHECK-NEXT: [[C:%.*]] = or i32 [[TMP1]], -8388608
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = zext i32 %X to i36
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%B = or i36 %A, -2147483648 ; 0xF80000000
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%C = ashr i36 %B, 8
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%T = trunc i36 %C to i32
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ret i32 %T
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}
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define <2 x i32> @trunc_ashr_vec(<2 x i32> %X) {
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; CHECK-LABEL: @trunc_ashr_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = lshr <2 x i32> [[X:%.*]], <i32 8, i32 8>
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; CHECK-NEXT: [[C:%.*]] = or <2 x i32> [[TMP1]], <i32 -8388608, i32 -8388608>
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; CHECK-NEXT: ret <2 x i32> [[C]]
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;
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%A = zext <2 x i32> %X to <2 x i36>
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%B = or <2 x i36> %A, <i36 -2147483648, i36 -2147483648> ; 0xF80000000
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%C = ashr <2 x i36> %B, <i36 8, i36 8>
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%T = trunc <2 x i36> %C to <2 x i32>
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ret <2 x i32> %T
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}
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define i92 @test7(i64 %A) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: [[TMP1:%.*]] = lshr i64 [[A:%.*]], 32
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; CHECK-NEXT: [[D:%.*]] = zext i64 [[TMP1]] to i92
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; CHECK-NEXT: ret i92 [[D]]
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;
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%B = zext i64 %A to i128
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%C = lshr i128 %B, 32
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%D = trunc i128 %C to i92
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ret i92 %D
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}
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define i64 @test8(i32 %A, i32 %B) {
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; CHECK-LABEL: @test8(
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; CHECK-NEXT: [[C:%.*]] = zext i32 [[A:%.*]] to i64
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; CHECK-NEXT: [[D:%.*]] = zext i32 [[B:%.*]] to i64
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; CHECK-NEXT: [[E:%.*]] = shl nuw i64 [[D]], 32
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; CHECK-NEXT: [[F:%.*]] = or i64 [[E]], [[C]]
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; CHECK-NEXT: ret i64 [[F]]
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;
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%C = zext i32 %A to i128
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%D = zext i32 %B to i128
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%E = shl i128 %D, 32
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%F = or i128 %E, %C
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%G = trunc i128 %F to i64
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ret i64 %G
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}
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define <2 x i64> @test8_vec(<2 x i32> %A, <2 x i32> %B) {
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; CHECK-LABEL: @test8_vec(
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; CHECK-NEXT: [[C:%.*]] = zext <2 x i32> [[A:%.*]] to <2 x i64>
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; CHECK-NEXT: [[D:%.*]] = zext <2 x i32> [[B:%.*]] to <2 x i64>
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; CHECK-NEXT: [[E:%.*]] = shl nuw <2 x i64> [[D]], <i64 32, i64 32>
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; CHECK-NEXT: [[F:%.*]] = or <2 x i64> [[E]], [[C]]
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; CHECK-NEXT: ret <2 x i64> [[F]]
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;
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%C = zext <2 x i32> %A to <2 x i128>
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%D = zext <2 x i32> %B to <2 x i128>
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%E = shl <2 x i128> %D, <i128 32, i128 32>
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%F = or <2 x i128> %E, %C
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%G = trunc <2 x i128> %F to <2 x i64>
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ret <2 x i64> %G
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}
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define <2 x i64> @test8_vec_nonuniform(<2 x i32> %A, <2 x i32> %B) {
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; CHECK-LABEL: @test8_vec_nonuniform(
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; CHECK-NEXT: [[C:%.*]] = zext <2 x i32> [[A:%.*]] to <2 x i64>
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; CHECK-NEXT: [[D:%.*]] = zext <2 x i32> [[B:%.*]] to <2 x i64>
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; CHECK-NEXT: [[E:%.*]] = shl <2 x i64> [[D]], <i64 32, i64 48>
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; CHECK-NEXT: [[F:%.*]] = or <2 x i64> [[E]], [[C]]
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; CHECK-NEXT: ret <2 x i64> [[F]]
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;
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%C = zext <2 x i32> %A to <2 x i128>
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%D = zext <2 x i32> %B to <2 x i128>
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%E = shl <2 x i128> %D, <i128 32, i128 48>
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%F = or <2 x i128> %E, %C
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%G = trunc <2 x i128> %F to <2 x i64>
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ret <2 x i64> %G
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}
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define <2 x i64> @test8_vec_undef(<2 x i32> %A, <2 x i32> %B) {
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; CHECK-LABEL: @test8_vec_undef(
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; CHECK-NEXT: [[C:%.*]] = zext <2 x i32> [[A:%.*]] to <2 x i128>
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; CHECK-NEXT: [[D:%.*]] = zext <2 x i32> [[B:%.*]] to <2 x i128>
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; CHECK-NEXT: [[E:%.*]] = shl <2 x i128> [[D]], <i128 32, i128 undef>
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; CHECK-NEXT: [[F:%.*]] = or <2 x i128> [[E]], [[C]]
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; CHECK-NEXT: [[G:%.*]] = trunc <2 x i128> [[F]] to <2 x i64>
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; CHECK-NEXT: ret <2 x i64> [[G]]
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;
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%C = zext <2 x i32> %A to <2 x i128>
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%D = zext <2 x i32> %B to <2 x i128>
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%E = shl <2 x i128> %D, <i128 32, i128 undef>
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%F = or <2 x i128> %E, %C
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%G = trunc <2 x i128> %F to <2 x i64>
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ret <2 x i64> %G
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}
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define i8 @test9(i32 %X) {
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; CHECK-LABEL: @test9(
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[X:%.*]] to i8
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; CHECK-NEXT: [[Z:%.*]] = and i8 [[TMP1]], 42
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; CHECK-NEXT: ret i8 [[Z]]
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;
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%Y = and i32 %X, 42
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%Z = trunc i32 %Y to i8
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ret i8 %Z
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}
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; rdar://8808586
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define i8 @test10(i32 %X) {
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; CHECK-LABEL: @test10(
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; CHECK-NEXT: [[Y:%.*]] = trunc i32 [[X:%.*]] to i8
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; CHECK-NEXT: [[Z:%.*]] = and i8 [[Y]], 42
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; CHECK-NEXT: ret i8 [[Z]]
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;
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%Y = trunc i32 %X to i8
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%Z = and i8 %Y, 42
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ret i8 %Z
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}
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define i64 @test11(i32 %A, i32 %B) {
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; CHECK-LABEL: @test11(
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; CHECK-NEXT: [[C:%.*]] = zext i32 [[A:%.*]] to i64
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; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[B:%.*]], 31
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; CHECK-NEXT: [[E:%.*]] = zext i32 [[TMP1]] to i64
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; CHECK-NEXT: [[F:%.*]] = shl i64 [[C]], [[E]]
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; CHECK-NEXT: ret i64 [[F]]
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;
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%C = zext i32 %A to i128
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%D = zext i32 %B to i128
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%E = and i128 %D, 31
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%F = shl i128 %C, %E
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%G = trunc i128 %F to i64
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ret i64 %G
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}
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define <2 x i64> @test11_vec(<2 x i32> %A, <2 x i32> %B) {
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; CHECK-LABEL: @test11_vec(
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; CHECK-NEXT: [[C:%.*]] = zext <2 x i32> [[A:%.*]] to <2 x i64>
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; CHECK-NEXT: [[TMP1:%.*]] = and <2 x i32> [[B:%.*]], <i32 31, i32 31>
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; CHECK-NEXT: [[E:%.*]] = zext <2 x i32> [[TMP1]] to <2 x i64>
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; CHECK-NEXT: [[F:%.*]] = shl <2 x i64> [[C]], [[E]]
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; CHECK-NEXT: ret <2 x i64> [[F]]
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;
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%C = zext <2 x i32> %A to <2 x i128>
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%D = zext <2 x i32> %B to <2 x i128>
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%E = and <2 x i128> %D, <i128 31, i128 31>
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%F = shl <2 x i128> %C, %E
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%G = trunc <2 x i128> %F to <2 x i64>
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ret <2 x i64> %G
|
|
}
|
|
|
|
define <2 x i64> @test11_vec_nonuniform(<2 x i32> %A, <2 x i32> %B) {
|
|
; CHECK-LABEL: @test11_vec_nonuniform(
|
|
; CHECK-NEXT: [[C:%.*]] = zext <2 x i32> [[A:%.*]] to <2 x i64>
|
|
; CHECK-NEXT: [[TMP1:%.*]] = and <2 x i32> [[B:%.*]], <i32 31, i32 15>
|
|
; CHECK-NEXT: [[E:%.*]] = zext <2 x i32> [[TMP1]] to <2 x i64>
|
|
; CHECK-NEXT: [[F:%.*]] = shl <2 x i64> [[C]], [[E]]
|
|
; CHECK-NEXT: ret <2 x i64> [[F]]
|
|
;
|
|
%C = zext <2 x i32> %A to <2 x i128>
|
|
%D = zext <2 x i32> %B to <2 x i128>
|
|
%E = and <2 x i128> %D, <i128 31, i128 15>
|
|
%F = shl <2 x i128> %C, %E
|
|
%G = trunc <2 x i128> %F to <2 x i64>
|
|
ret <2 x i64> %G
|
|
}
|
|
|
|
define <2 x i64> @test11_vec_undef(<2 x i32> %A, <2 x i32> %B) {
|
|
; CHECK-LABEL: @test11_vec_undef(
|
|
; CHECK-NEXT: [[C:%.*]] = zext <2 x i32> [[A:%.*]] to <2 x i128>
|
|
; CHECK-NEXT: [[D:%.*]] = zext <2 x i32> [[B:%.*]] to <2 x i128>
|
|
; CHECK-NEXT: [[E:%.*]] = and <2 x i128> [[D]], <i128 31, i128 undef>
|
|
; CHECK-NEXT: [[F:%.*]] = shl <2 x i128> [[C]], [[E]]
|
|
; CHECK-NEXT: [[G:%.*]] = trunc <2 x i128> [[F]] to <2 x i64>
|
|
; CHECK-NEXT: ret <2 x i64> [[G]]
|
|
;
|
|
%C = zext <2 x i32> %A to <2 x i128>
|
|
%D = zext <2 x i32> %B to <2 x i128>
|
|
%E = and <2 x i128> %D, <i128 31, i128 undef>
|
|
%F = shl <2 x i128> %C, %E
|
|
%G = trunc <2 x i128> %F to <2 x i64>
|
|
ret <2 x i64> %G
|
|
}
|
|
|
|
define i64 @test12(i32 %A, i32 %B) {
|
|
; CHECK-LABEL: @test12(
|
|
; CHECK-NEXT: [[C:%.*]] = zext i32 [[A:%.*]] to i64
|
|
; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[B:%.*]], 31
|
|
; CHECK-NEXT: [[E:%.*]] = zext i32 [[TMP1]] to i64
|
|
; CHECK-NEXT: [[F:%.*]] = lshr i64 [[C]], [[E]]
|
|
; CHECK-NEXT: ret i64 [[F]]
|
|
;
|
|
%C = zext i32 %A to i128
|
|
%D = zext i32 %B to i128
|
|
%E = and i128 %D, 31
|
|
%F = lshr i128 %C, %E
|
|
%G = trunc i128 %F to i64
|
|
ret i64 %G
|
|
}
|
|
|
|
define <2 x i64> @test12_vec(<2 x i32> %A, <2 x i32> %B) {
|
|
; CHECK-LABEL: @test12_vec(
|
|
; CHECK-NEXT: [[C:%.*]] = zext <2 x i32> [[A:%.*]] to <2 x i64>
|
|
; CHECK-NEXT: [[TMP1:%.*]] = and <2 x i32> [[B:%.*]], <i32 31, i32 31>
|
|
; CHECK-NEXT: [[E:%.*]] = zext <2 x i32> [[TMP1]] to <2 x i64>
|
|
; CHECK-NEXT: [[F:%.*]] = lshr <2 x i64> [[C]], [[E]]
|
|
; CHECK-NEXT: ret <2 x i64> [[F]]
|
|
;
|
|
%C = zext <2 x i32> %A to <2 x i128>
|
|
%D = zext <2 x i32> %B to <2 x i128>
|
|
%E = and <2 x i128> %D, <i128 31, i128 31>
|
|
%F = lshr <2 x i128> %C, %E
|
|
%G = trunc <2 x i128> %F to <2 x i64>
|
|
ret <2 x i64> %G
|
|
}
|
|
|
|
define <2 x i64> @test12_vec_nonuniform(<2 x i32> %A, <2 x i32> %B) {
|
|
; CHECK-LABEL: @test12_vec_nonuniform(
|
|
; CHECK-NEXT: [[C:%.*]] = zext <2 x i32> [[A:%.*]] to <2 x i64>
|
|
; CHECK-NEXT: [[TMP1:%.*]] = and <2 x i32> [[B:%.*]], <i32 31, i32 15>
|
|
; CHECK-NEXT: [[E:%.*]] = zext <2 x i32> [[TMP1]] to <2 x i64>
|
|
; CHECK-NEXT: [[F:%.*]] = lshr <2 x i64> [[C]], [[E]]
|
|
; CHECK-NEXT: ret <2 x i64> [[F]]
|
|
;
|
|
%C = zext <2 x i32> %A to <2 x i128>
|
|
%D = zext <2 x i32> %B to <2 x i128>
|
|
%E = and <2 x i128> %D, <i128 31, i128 15>
|
|
%F = lshr <2 x i128> %C, %E
|
|
%G = trunc <2 x i128> %F to <2 x i64>
|
|
ret <2 x i64> %G
|
|
}
|
|
|
|
define <2 x i64> @test12_vec_undef(<2 x i32> %A, <2 x i32> %B) {
|
|
; CHECK-LABEL: @test12_vec_undef(
|
|
; CHECK-NEXT: [[C:%.*]] = zext <2 x i32> [[A:%.*]] to <2 x i128>
|
|
; CHECK-NEXT: [[D:%.*]] = zext <2 x i32> [[B:%.*]] to <2 x i128>
|
|
; CHECK-NEXT: [[E:%.*]] = and <2 x i128> [[D]], <i128 31, i128 undef>
|
|
; CHECK-NEXT: [[F:%.*]] = lshr <2 x i128> [[C]], [[E]]
|
|
; CHECK-NEXT: [[G:%.*]] = trunc <2 x i128> [[F]] to <2 x i64>
|
|
; CHECK-NEXT: ret <2 x i64> [[G]]
|
|
;
|
|
%C = zext <2 x i32> %A to <2 x i128>
|
|
%D = zext <2 x i32> %B to <2 x i128>
|
|
%E = and <2 x i128> %D, <i128 31, i128 undef>
|
|
%F = lshr <2 x i128> %C, %E
|
|
%G = trunc <2 x i128> %F to <2 x i64>
|
|
ret <2 x i64> %G
|
|
}
|
|
|
|
define i64 @test13(i32 %A, i32 %B) {
|
|
; CHECK-LABEL: @test13(
|
|
; CHECK-NEXT: [[C:%.*]] = sext i32 [[A:%.*]] to i64
|
|
; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[B:%.*]], 31
|
|
; CHECK-NEXT: [[E:%.*]] = zext i32 [[TMP1]] to i64
|
|
; CHECK-NEXT: [[F:%.*]] = ashr i64 [[C]], [[E]]
|
|
; CHECK-NEXT: ret i64 [[F]]
|
|
;
|
|
%C = sext i32 %A to i128
|
|
%D = zext i32 %B to i128
|
|
%E = and i128 %D, 31
|
|
%F = ashr i128 %C, %E
|
|
%G = trunc i128 %F to i64
|
|
ret i64 %G
|
|
}
|
|
|
|
define <2 x i64> @test13_vec(<2 x i32> %A, <2 x i32> %B) {
|
|
; CHECK-LABEL: @test13_vec(
|
|
; CHECK-NEXT: [[C:%.*]] = sext <2 x i32> [[A:%.*]] to <2 x i64>
|
|
; CHECK-NEXT: [[TMP1:%.*]] = and <2 x i32> [[B:%.*]], <i32 31, i32 31>
|
|
; CHECK-NEXT: [[E:%.*]] = zext <2 x i32> [[TMP1]] to <2 x i64>
|
|
; CHECK-NEXT: [[F:%.*]] = ashr <2 x i64> [[C]], [[E]]
|
|
; CHECK-NEXT: ret <2 x i64> [[F]]
|
|
;
|
|
%C = sext <2 x i32> %A to <2 x i128>
|
|
%D = zext <2 x i32> %B to <2 x i128>
|
|
%E = and <2 x i128> %D, <i128 31, i128 31>
|
|
%F = ashr <2 x i128> %C, %E
|
|
%G = trunc <2 x i128> %F to <2 x i64>
|
|
ret <2 x i64> %G
|
|
}
|
|
|
|
define <2 x i64> @test13_vec_nonuniform(<2 x i32> %A, <2 x i32> %B) {
|
|
; CHECK-LABEL: @test13_vec_nonuniform(
|
|
; CHECK-NEXT: [[C:%.*]] = sext <2 x i32> [[A:%.*]] to <2 x i64>
|
|
; CHECK-NEXT: [[TMP1:%.*]] = and <2 x i32> [[B:%.*]], <i32 31, i32 15>
|
|
; CHECK-NEXT: [[E:%.*]] = zext <2 x i32> [[TMP1]] to <2 x i64>
|
|
; CHECK-NEXT: [[F:%.*]] = ashr <2 x i64> [[C]], [[E]]
|
|
; CHECK-NEXT: ret <2 x i64> [[F]]
|
|
;
|
|
%C = sext <2 x i32> %A to <2 x i128>
|
|
%D = zext <2 x i32> %B to <2 x i128>
|
|
%E = and <2 x i128> %D, <i128 31, i128 15>
|
|
%F = ashr <2 x i128> %C, %E
|
|
%G = trunc <2 x i128> %F to <2 x i64>
|
|
ret <2 x i64> %G
|
|
}
|
|
|
|
define <2 x i64> @test13_vec_undef(<2 x i32> %A, <2 x i32> %B) {
|
|
; CHECK-LABEL: @test13_vec_undef(
|
|
; CHECK-NEXT: [[C:%.*]] = sext <2 x i32> [[A:%.*]] to <2 x i128>
|
|
; CHECK-NEXT: [[D:%.*]] = zext <2 x i32> [[B:%.*]] to <2 x i128>
|
|
; CHECK-NEXT: [[E:%.*]] = and <2 x i128> [[D]], <i128 31, i128 undef>
|
|
; CHECK-NEXT: [[F:%.*]] = ashr <2 x i128> [[C]], [[E]]
|
|
; CHECK-NEXT: [[G:%.*]] = trunc <2 x i128> [[F]] to <2 x i64>
|
|
; CHECK-NEXT: ret <2 x i64> [[G]]
|
|
;
|
|
%C = sext <2 x i32> %A to <2 x i128>
|
|
%D = zext <2 x i32> %B to <2 x i128>
|
|
%E = and <2 x i128> %D, <i128 31, i128 undef>
|
|
%F = ashr <2 x i128> %C, %E
|
|
%G = trunc <2 x i128> %F to <2 x i64>
|
|
ret <2 x i64> %G
|
|
}
|
|
|
|
; PR25543
|
|
; https://llvm.org/bugs/show_bug.cgi?id=25543
|
|
; This is an extractelement.
|
|
|
|
define i32 @trunc_bitcast1(<4 x i32> %v) {
|
|
; CHECK-LABEL: @trunc_bitcast1(
|
|
; CHECK-NEXT: [[EXT:%.*]] = extractelement <4 x i32> [[V:%.*]], i32 1
|
|
; CHECK-NEXT: ret i32 [[EXT]]
|
|
;
|
|
%bc = bitcast <4 x i32> %v to i128
|
|
%shr = lshr i128 %bc, 32
|
|
%ext = trunc i128 %shr to i32
|
|
ret i32 %ext
|
|
}
|
|
|
|
; A bitcast may still be required.
|
|
|
|
define i32 @trunc_bitcast2(<2 x i64> %v) {
|
|
; CHECK-LABEL: @trunc_bitcast2(
|
|
; CHECK-NEXT: [[BC1:%.*]] = bitcast <2 x i64> [[V:%.*]] to <4 x i32>
|
|
; CHECK-NEXT: [[EXT:%.*]] = extractelement <4 x i32> [[BC1]], i32 2
|
|
; CHECK-NEXT: ret i32 [[EXT]]
|
|
;
|
|
%bc = bitcast <2 x i64> %v to i128
|
|
%shr = lshr i128 %bc, 64
|
|
%ext = trunc i128 %shr to i32
|
|
ret i32 %ext
|
|
}
|
|
|
|
; The right shift is optional.
|
|
|
|
define i32 @trunc_bitcast3(<4 x i32> %v) {
|
|
; CHECK-LABEL: @trunc_bitcast3(
|
|
; CHECK-NEXT: [[EXT:%.*]] = extractelement <4 x i32> [[V:%.*]], i32 0
|
|
; CHECK-NEXT: ret i32 [[EXT]]
|
|
;
|
|
%bc = bitcast <4 x i32> %v to i128
|
|
%ext = trunc i128 %bc to i32
|
|
ret i32 %ext
|
|
}
|
|
|
|
define i32 @trunc_shl_31_i32_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_31_i32_i64(
|
|
; CHECK-NEXT: [[VAL_TR:%.*]] = trunc i64 [[VAL:%.*]] to i32
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shl i32 [[VAL_TR]], 31
|
|
; CHECK-NEXT: ret i32 [[TRUNC]]
|
|
;
|
|
%shl = shl i64 %val, 31
|
|
%trunc = trunc i64 %shl to i32
|
|
ret i32 %trunc
|
|
}
|
|
|
|
define i32 @trunc_shl_nsw_31_i32_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_nsw_31_i32_i64(
|
|
; CHECK-NEXT: [[VAL_TR:%.*]] = trunc i64 [[VAL:%.*]] to i32
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shl i32 [[VAL_TR]], 31
|
|
; CHECK-NEXT: ret i32 [[TRUNC]]
|
|
;
|
|
%shl = shl nsw i64 %val, 31
|
|
%trunc = trunc i64 %shl to i32
|
|
ret i32 %trunc
|
|
}
|
|
|
|
define i32 @trunc_shl_nuw_31_i32_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_nuw_31_i32_i64(
|
|
; CHECK-NEXT: [[VAL_TR:%.*]] = trunc i64 [[VAL:%.*]] to i32
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shl i32 [[VAL_TR]], 31
|
|
; CHECK-NEXT: ret i32 [[TRUNC]]
|
|
;
|
|
%shl = shl nuw i64 %val, 31
|
|
%trunc = trunc i64 %shl to i32
|
|
ret i32 %trunc
|
|
}
|
|
|
|
define i32 @trunc_shl_nsw_nuw_31_i32_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_nsw_nuw_31_i32_i64(
|
|
; CHECK-NEXT: [[VAL_TR:%.*]] = trunc i64 [[VAL:%.*]] to i32
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shl i32 [[VAL_TR]], 31
|
|
; CHECK-NEXT: ret i32 [[TRUNC]]
|
|
;
|
|
%shl = shl nsw nuw i64 %val, 31
|
|
%trunc = trunc i64 %shl to i32
|
|
ret i32 %trunc
|
|
}
|
|
|
|
define i16 @trunc_shl_15_i16_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_15_i16_i64(
|
|
; CHECK-NEXT: [[VAL_TR:%.*]] = trunc i64 [[VAL:%.*]] to i16
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shl i16 [[VAL_TR]], 15
|
|
; CHECK-NEXT: ret i16 [[TRUNC]]
|
|
;
|
|
%shl = shl i64 %val, 15
|
|
%trunc = trunc i64 %shl to i16
|
|
ret i16 %trunc
|
|
}
|
|
|
|
define i16 @trunc_shl_15_i16_i32(i32 %val) {
|
|
; CHECK-LABEL: @trunc_shl_15_i16_i32(
|
|
; CHECK-NEXT: [[VAL_TR:%.*]] = trunc i32 [[VAL:%.*]] to i16
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shl i16 [[VAL_TR]], 15
|
|
; CHECK-NEXT: ret i16 [[TRUNC]]
|
|
;
|
|
%shl = shl i32 %val, 15
|
|
%trunc = trunc i32 %shl to i16
|
|
ret i16 %trunc
|
|
}
|
|
|
|
define i8 @trunc_shl_7_i8_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_7_i8_i64(
|
|
; CHECK-NEXT: [[VAL_TR:%.*]] = trunc i64 [[VAL:%.*]] to i8
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shl i8 [[VAL_TR]], 7
|
|
; CHECK-NEXT: ret i8 [[TRUNC]]
|
|
;
|
|
%shl = shl i64 %val, 7
|
|
%trunc = trunc i64 %shl to i8
|
|
ret i8 %trunc
|
|
}
|
|
|
|
define i2 @trunc_shl_1_i2_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_1_i2_i64(
|
|
; CHECK-NEXT: [[SHL:%.*]] = shl i64 [[VAL:%.*]], 1
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i64 [[SHL]] to i2
|
|
; CHECK-NEXT: ret i2 [[TRUNC]]
|
|
;
|
|
%shl = shl i64 %val, 1
|
|
%trunc = trunc i64 %shl to i2
|
|
ret i2 %trunc
|
|
}
|
|
|
|
define i32 @trunc_shl_1_i32_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_1_i32_i64(
|
|
; CHECK-NEXT: [[VAL_TR:%.*]] = trunc i64 [[VAL:%.*]] to i32
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shl i32 [[VAL_TR]], 1
|
|
; CHECK-NEXT: ret i32 [[TRUNC]]
|
|
;
|
|
%shl = shl i64 %val, 1
|
|
%trunc = trunc i64 %shl to i32
|
|
ret i32 %trunc
|
|
}
|
|
|
|
define i32 @trunc_shl_16_i32_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_16_i32_i64(
|
|
; CHECK-NEXT: [[VAL_TR:%.*]] = trunc i64 [[VAL:%.*]] to i32
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shl i32 [[VAL_TR]], 16
|
|
; CHECK-NEXT: ret i32 [[TRUNC]]
|
|
;
|
|
%shl = shl i64 %val, 16
|
|
%trunc = trunc i64 %shl to i32
|
|
ret i32 %trunc
|
|
}
|
|
|
|
define i32 @trunc_shl_33_i32_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_33_i32_i64(
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
%shl = shl i64 %val, 33
|
|
%trunc = trunc i64 %shl to i32
|
|
ret i32 %trunc
|
|
}
|
|
|
|
define i32 @trunc_shl_32_i32_i64(i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_32_i32_i64(
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
%shl = shl i64 %val, 32
|
|
%trunc = trunc i64 %shl to i32
|
|
ret i32 %trunc
|
|
}
|
|
|
|
; TODO: Should be able to handle vectors
|
|
define <2 x i32> @trunc_shl_16_v2i32_v2i64(<2 x i64> %val) {
|
|
; CHECK-LABEL: @trunc_shl_16_v2i32_v2i64(
|
|
; CHECK-NEXT: [[SHL:%.*]] = shl <2 x i64> [[VAL:%.*]], <i64 16, i64 16>
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = trunc <2 x i64> [[SHL]] to <2 x i32>
|
|
; CHECK-NEXT: ret <2 x i32> [[TRUNC]]
|
|
;
|
|
%shl = shl <2 x i64> %val, <i64 16, i64 16>
|
|
%trunc = trunc <2 x i64> %shl to <2 x i32>
|
|
ret <2 x i32> %trunc
|
|
}
|
|
|
|
define <2 x i32> @trunc_shl_nosplat_v2i32_v2i64(<2 x i64> %val) {
|
|
; CHECK-LABEL: @trunc_shl_nosplat_v2i32_v2i64(
|
|
; CHECK-NEXT: [[SHL:%.*]] = shl <2 x i64> [[VAL:%.*]], <i64 15, i64 16>
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = trunc <2 x i64> [[SHL]] to <2 x i32>
|
|
; CHECK-NEXT: ret <2 x i32> [[TRUNC]]
|
|
;
|
|
%shl = shl <2 x i64> %val, <i64 15, i64 16>
|
|
%trunc = trunc <2 x i64> %shl to <2 x i32>
|
|
ret <2 x i32> %trunc
|
|
}
|
|
|
|
define void @trunc_shl_31_i32_i64_multi_use(i64 %val, i32 addrspace(1)* %ptr0, i64 addrspace(1)* %ptr1) {
|
|
; CHECK-LABEL: @trunc_shl_31_i32_i64_multi_use(
|
|
; CHECK-NEXT: [[SHL:%.*]] = shl i64 [[VAL:%.*]], 31
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i64 [[SHL]] to i32
|
|
; CHECK-NEXT: store volatile i32 [[TRUNC]], i32 addrspace(1)* [[PTR0:%.*]], align 4
|
|
; CHECK-NEXT: store volatile i64 [[SHL]], i64 addrspace(1)* [[PTR1:%.*]], align 8
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%shl = shl i64 %val, 31
|
|
%trunc = trunc i64 %shl to i32
|
|
store volatile i32 %trunc, i32 addrspace(1)* %ptr0
|
|
store volatile i64 %shl, i64 addrspace(1)* %ptr1
|
|
ret void
|
|
}
|
|
|
|
define i32 @trunc_shl_lshr_infloop(i64 %arg) {
|
|
; CHECK-LABEL: @trunc_shl_lshr_infloop(
|
|
; CHECK-NEXT: [[A:%.*]] = lshr i64 [[ARG:%.*]], 1
|
|
; CHECK-NEXT: [[B:%.*]] = shl i64 [[A]], 2
|
|
; CHECK-NEXT: [[C:%.*]] = trunc i64 [[B]] to i32
|
|
; CHECK-NEXT: ret i32 [[C]]
|
|
;
|
|
%A = lshr i64 %arg, 1
|
|
%B = shl i64 %A, 2
|
|
%C = trunc i64 %B to i32
|
|
ret i32 %C
|
|
}
|
|
|
|
define i32 @trunc_shl_ashr_infloop(i64 %arg) {
|
|
; CHECK-LABEL: @trunc_shl_ashr_infloop(
|
|
; CHECK-NEXT: [[A:%.*]] = ashr i64 [[ARG:%.*]], 3
|
|
; CHECK-NEXT: [[B:%.*]] = shl nsw i64 [[A]], 2
|
|
; CHECK-NEXT: [[C:%.*]] = trunc i64 [[B]] to i32
|
|
; CHECK-NEXT: ret i32 [[C]]
|
|
;
|
|
%A = ashr i64 %arg, 3
|
|
%B = shl i64 %A, 2
|
|
%C = trunc i64 %B to i32
|
|
ret i32 %C
|
|
}
|
|
|
|
define i32 @trunc_shl_shl_infloop(i64 %arg) {
|
|
; CHECK-LABEL: @trunc_shl_shl_infloop(
|
|
; CHECK-NEXT: [[ARG_TR:%.*]] = trunc i64 [[ARG:%.*]] to i32
|
|
; CHECK-NEXT: [[C:%.*]] = shl i32 [[ARG_TR]], 3
|
|
; CHECK-NEXT: ret i32 [[C]]
|
|
;
|
|
%A = shl i64 %arg, 1
|
|
%B = shl i64 %A, 2
|
|
%C = trunc i64 %B to i32
|
|
ret i32 %C
|
|
}
|
|
|
|
define i32 @trunc_shl_lshr_var(i64 %arg, i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_lshr_var(
|
|
; CHECK-NEXT: [[A:%.*]] = lshr i64 [[ARG:%.*]], [[VAL:%.*]]
|
|
; CHECK-NEXT: [[A_TR:%.*]] = trunc i64 [[A]] to i32
|
|
; CHECK-NEXT: [[C:%.*]] = shl i32 [[A_TR]], 2
|
|
; CHECK-NEXT: ret i32 [[C]]
|
|
;
|
|
%A = lshr i64 %arg, %val
|
|
%B = shl i64 %A, 2
|
|
%C = trunc i64 %B to i32
|
|
ret i32 %C
|
|
}
|
|
|
|
define i32 @trunc_shl_ashr_var(i64 %arg, i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_ashr_var(
|
|
; CHECK-NEXT: [[A:%.*]] = ashr i64 [[ARG:%.*]], [[VAL:%.*]]
|
|
; CHECK-NEXT: [[A_TR:%.*]] = trunc i64 [[A]] to i32
|
|
; CHECK-NEXT: [[C:%.*]] = shl i32 [[A_TR]], 2
|
|
; CHECK-NEXT: ret i32 [[C]]
|
|
;
|
|
%A = ashr i64 %arg, %val
|
|
%B = shl i64 %A, 2
|
|
%C = trunc i64 %B to i32
|
|
ret i32 %C
|
|
}
|
|
|
|
define i32 @trunc_shl_shl_var(i64 %arg, i64 %val) {
|
|
; CHECK-LABEL: @trunc_shl_shl_var(
|
|
; CHECK-NEXT: [[A:%.*]] = shl i64 [[ARG:%.*]], [[VAL:%.*]]
|
|
; CHECK-NEXT: [[A_TR:%.*]] = trunc i64 [[A]] to i32
|
|
; CHECK-NEXT: [[C:%.*]] = shl i32 [[A_TR]], 2
|
|
; CHECK-NEXT: ret i32 [[C]]
|
|
;
|
|
%A = shl i64 %arg, %val
|
|
%B = shl i64 %A, 2
|
|
%C = trunc i64 %B to i32
|
|
ret i32 %C
|
|
}
|
|
|
|
define <8 x i16> @trunc_shl_v8i15_v8i32_15(<8 x i32> %a) {
|
|
; CHECK-LABEL: @trunc_shl_v8i15_v8i32_15(
|
|
; CHECK-NEXT: [[SHL:%.*]] = shl <8 x i32> [[A:%.*]], <i32 15, i32 15, i32 15, i32 15, i32 15, i32 15, i32 15, i32 15>
|
|
; CHECK-NEXT: [[CONV:%.*]] = trunc <8 x i32> [[SHL]] to <8 x i16>
|
|
; CHECK-NEXT: ret <8 x i16> [[CONV]]
|
|
;
|
|
%shl = shl <8 x i32> %a, <i32 15, i32 15, i32 15, i32 15, i32 15, i32 15, i32 15, i32 15>
|
|
%conv = trunc <8 x i32> %shl to <8 x i16>
|
|
ret <8 x i16> %conv
|
|
}
|
|
|
|
define <8 x i16> @trunc_shl_v8i16_v8i32_16(<8 x i32> %a) {
|
|
; CHECK-LABEL: @trunc_shl_v8i16_v8i32_16(
|
|
; CHECK-NEXT: ret <8 x i16> zeroinitializer
|
|
;
|
|
%shl = shl <8 x i32> %a, <i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
|
|
%conv = trunc <8 x i32> %shl to <8 x i16>
|
|
ret <8 x i16> %conv
|
|
}
|
|
|
|
define <8 x i16> @trunc_shl_v8i16_v8i32_17(<8 x i32> %a) {
|
|
; CHECK-LABEL: @trunc_shl_v8i16_v8i32_17(
|
|
; CHECK-NEXT: ret <8 x i16> zeroinitializer
|
|
;
|
|
%shl = shl <8 x i32> %a, <i32 17, i32 17, i32 17, i32 17, i32 17, i32 17, i32 17, i32 17>
|
|
%conv = trunc <8 x i32> %shl to <8 x i16>
|
|
ret <8 x i16> %conv
|
|
}
|
|
|
|
define <8 x i16> @trunc_shl_v8i16_v8i32_4(<8 x i32> %a) {
|
|
; CHECK-LABEL: @trunc_shl_v8i16_v8i32_4(
|
|
; CHECK-NEXT: [[SHL:%.*]] = shl <8 x i32> [[A:%.*]], <i32 4, i32 4, i32 4, i32 4, i32 4, i32 4, i32 4, i32 4>
|
|
; CHECK-NEXT: [[CONV:%.*]] = trunc <8 x i32> [[SHL]] to <8 x i16>
|
|
; CHECK-NEXT: ret <8 x i16> [[CONV]]
|
|
;
|
|
%shl = shl <8 x i32> %a, <i32 4, i32 4, i32 4, i32 4, i32 4, i32 4, i32 4, i32 4>
|
|
%conv = trunc <8 x i32> %shl to <8 x i16>
|
|
ret <8 x i16> %conv
|
|
}
|
|
|
|
; Although the mask is the same value, we don't create a shuffle for types that the backend may not be able to handle:
|
|
; trunc (shuffle X, C, Mask) --> shuffle (trunc X), C', Mask
|
|
|
|
define <4 x i8> @wide_shuf(<4 x i32> %x) {
|
|
; CHECK-LABEL: @wide_shuf(
|
|
; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> <i32 undef, i32 3634, i32 90, i32 undef>, <4 x i32> <i32 1, i32 5, i32 6, i32 2>
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = trunc <4 x i32> [[SHUF]] to <4 x i8>
|
|
; CHECK-NEXT: ret <4 x i8> [[TRUNC]]
|
|
;
|
|
%shuf = shufflevector <4 x i32> %x, <4 x i32> <i32 35, i32 3634, i32 90, i32 -1>, <4 x i32> <i32 1, i32 5, i32 6, i32 2>
|
|
%trunc = trunc <4 x i32> %shuf to <4 x i8>
|
|
ret <4 x i8> %trunc
|
|
}
|
|
|
|
; trunc (shuffle X, undef, SplatMask) --> shuffle (trunc X), undef, SplatMask
|
|
|
|
define <4 x i8> @wide_splat1(<4 x i32> %x) {
|
|
; CHECK-LABEL: @wide_splat1(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc <4 x i32> [[X:%.*]] to <4 x i8>
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <4 x i8> [[TMP1]], <4 x i8> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
|
|
; CHECK-NEXT: ret <4 x i8> [[TRUNC]]
|
|
;
|
|
%shuf = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
|
|
%trunc = trunc <4 x i32> %shuf to <4 x i8>
|
|
ret <4 x i8> %trunc
|
|
}
|
|
|
|
; Test weird types.
|
|
; trunc (shuffle X, undef, SplatMask) --> shuffle (trunc X), undef, SplatMask
|
|
|
|
define <3 x i31> @wide_splat2(<3 x i33> %x) {
|
|
; CHECK-LABEL: @wide_splat2(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc <3 x i33> [[X:%.*]] to <3 x i31>
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <3 x i31> [[TMP1]], <3 x i31> undef, <3 x i32> <i32 1, i32 1, i32 1>
|
|
; CHECK-NEXT: ret <3 x i31> [[TRUNC]]
|
|
;
|
|
%shuf = shufflevector <3 x i33> %x, <3 x i33> undef, <3 x i32> <i32 1, i32 1, i32 1>
|
|
%trunc = trunc <3 x i33> %shuf to <3 x i31>
|
|
ret <3 x i31> %trunc
|
|
}
|
|
|
|
; FIXME:
|
|
; trunc (shuffle X, undef, SplatMask) --> shuffle (trunc X), undef, SplatMask
|
|
; A mask with undef elements should still be considered a splat mask.
|
|
|
|
define <3 x i31> @wide_splat3(<3 x i33> %x) {
|
|
; CHECK-LABEL: @wide_splat3(
|
|
; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <3 x i33> [[X:%.*]], <3 x i33> undef, <3 x i32> <i32 undef, i32 1, i32 1>
|
|
; CHECK-NEXT: [[TRUNC:%.*]] = trunc <3 x i33> [[SHUF]] to <3 x i31>
|
|
; CHECK-NEXT: ret <3 x i31> [[TRUNC]]
|
|
;
|
|
%shuf = shufflevector <3 x i33> %x, <3 x i33> undef, <3 x i32> <i32 undef, i32 1, i32 1>
|
|
%trunc = trunc <3 x i33> %shuf to <3 x i31>
|
|
ret <3 x i31> %trunc
|
|
}
|
|
|
|
; TODO: The shuffle extends the length of the input vector. Should we shrink this?
|
|
|
|
define <8 x i8> @wide_lengthening_splat(<4 x i16> %v) {
|
|
; CHECK-LABEL: @wide_lengthening_splat(
|
|
; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i16> [[V:%.*]], <4 x i16> undef, <8 x i32> zeroinitializer
|
|
; CHECK-NEXT: [[TR:%.*]] = trunc <8 x i16> [[SHUF]] to <8 x i8>
|
|
; CHECK-NEXT: ret <8 x i8> [[TR]]
|
|
;
|
|
%shuf = shufflevector <4 x i16> %v, <4 x i16> %v, <8 x i32> zeroinitializer
|
|
%tr = trunc <8 x i16> %shuf to <8 x i8>
|
|
ret <8 x i8> %tr
|
|
}
|
|
|
|
define <2 x i8> @narrow_add_vec_constant(<2 x i32> %x) {
|
|
; CHECK-LABEL: @narrow_add_vec_constant(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[X:%.*]] to <2 x i8>
|
|
; CHECK-NEXT: [[TR:%.*]] = add <2 x i8> [[TMP1]], <i8 0, i8 127>
|
|
; CHECK-NEXT: ret <2 x i8> [[TR]]
|
|
;
|
|
%add = add <2 x i32> %x, <i32 256, i32 -129>
|
|
%tr = trunc <2 x i32> %add to <2 x i8>
|
|
ret <2 x i8> %tr
|
|
}
|
|
|
|
define <2 x i8> @narrow_mul_vec_constant(<2 x i32> %x) {
|
|
; CHECK-LABEL: @narrow_mul_vec_constant(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[X:%.*]] to <2 x i8>
|
|
; CHECK-NEXT: [[TR:%.*]] = mul <2 x i8> [[TMP1]], <i8 0, i8 127>
|
|
; CHECK-NEXT: ret <2 x i8> [[TR]]
|
|
;
|
|
%add = mul <2 x i32> %x, <i32 256, i32 -129>
|
|
%tr = trunc <2 x i32> %add to <2 x i8>
|
|
ret <2 x i8> %tr
|
|
}
|
|
|
|
define <2 x i8> @narrow_sub_vec_constant(<2 x i32> %x) {
|
|
; CHECK-LABEL: @narrow_sub_vec_constant(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> [[X:%.*]] to <2 x i8>
|
|
; CHECK-NEXT: [[TR:%.*]] = sub <2 x i8> <i8 0, i8 127>, [[TMP1]]
|
|
; CHECK-NEXT: ret <2 x i8> [[TR]]
|
|
;
|
|
%sub = sub <2 x i32> <i32 256, i32 -129>, %x
|
|
%tr = trunc <2 x i32> %sub to <2 x i8>
|
|
ret <2 x i8> %tr
|
|
}
|
|
|
|
; If the select is narrowed based on the target's datalayout, we allow more optimizations.
|
|
|
|
define i16 @PR44545(i32 %t0, i32 %data) {
|
|
; CHECK-LABEL: @PR44545(
|
|
; CHECK-NEXT: [[ISZERO:%.*]] = icmp eq i32 [[DATA:%.*]], 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[T0:%.*]] to i16
|
|
; CHECK-NEXT: [[SUB:%.*]] = select i1 [[ISZERO]], i16 -1, i16 [[TMP1]]
|
|
; CHECK-NEXT: ret i16 [[SUB]]
|
|
;
|
|
%t1 = add nuw nsw i32 %t0, 1
|
|
%iszero = icmp eq i32 %data, 0
|
|
%ffs = select i1 %iszero, i32 0, i32 %t1
|
|
%cast = trunc i32 %ffs to i16
|
|
%sub = add nsw i16 %cast, -1
|
|
ret i16 %sub
|
|
}
|