forked from OSchip/llvm-project
452 lines
16 KiB
LLVM
452 lines
16 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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target triple = "x86_64-apple-darwin10.0.0"
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; Bitcasts between vectors and scalars are valid.
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; PR4487
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define i32 @test1(i64 %a) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: ret i32 0
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;
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%t1 = bitcast i64 %a to <2 x i32>
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%t2 = bitcast i64 %a to <2 x i32>
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%t3 = xor <2 x i32> %t1, %t2
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%t4 = extractelement <2 x i32> %t3, i32 0
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ret i32 %t4
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}
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; Perform the bitwise logic in the source type of the operands to eliminate bitcasts.
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define <2 x i32> @xor_two_vector_bitcasts(<1 x i64> %a, <1 x i64> %b) {
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; CHECK-LABEL: @xor_two_vector_bitcasts(
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; CHECK-NEXT: [[T31:%.*]] = xor <1 x i64> %a, %b
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; CHECK-NEXT: [[T3:%.*]] = bitcast <1 x i64> [[T31]] to <2 x i32>
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; CHECK-NEXT: ret <2 x i32> [[T3]]
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;
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%t1 = bitcast <1 x i64> %a to <2 x i32>
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%t2 = bitcast <1 x i64> %b to <2 x i32>
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%t3 = xor <2 x i32> %t1, %t2
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ret <2 x i32> %t3
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}
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; Verify that 'xor' of vector and constant is done as a vector bitwise op before the bitcast.
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define <2 x i32> @xor_bitcast_vec_to_vec(<1 x i64> %a) {
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; CHECK-LABEL: @xor_bitcast_vec_to_vec(
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; CHECK-NEXT: [[T21:%.*]] = xor <1 x i64> %a, <i64 8589934593>
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; CHECK-NEXT: [[T2:%.*]] = bitcast <1 x i64> [[T21]] to <2 x i32>
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; CHECK-NEXT: ret <2 x i32> [[T2]]
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;
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%t1 = bitcast <1 x i64> %a to <2 x i32>
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%t2 = xor <2 x i32> <i32 1, i32 2>, %t1
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ret <2 x i32> %t2
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}
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; Verify that 'and' of integer and constant is done as a vector bitwise op before the bitcast.
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define i64 @and_bitcast_vec_to_int(<2 x i32> %a) {
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; CHECK-LABEL: @and_bitcast_vec_to_int(
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; CHECK-NEXT: [[T21:%.*]] = and <2 x i32> %a, <i32 3, i32 0>
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; CHECK-NEXT: [[T2:%.*]] = bitcast <2 x i32> [[T21]] to i64
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; CHECK-NEXT: ret i64 [[T2]]
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;
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%t1 = bitcast <2 x i32> %a to i64
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%t2 = and i64 %t1, 3
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ret i64 %t2
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}
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; Verify that 'or' of vector and constant is done as an integer bitwise op before the bitcast.
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define <2 x i32> @or_bitcast_int_to_vec(i64 %a) {
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; CHECK-LABEL: @or_bitcast_int_to_vec(
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; CHECK-NEXT: [[T21:%.*]] = or i64 %a, 8589934593
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; CHECK-NEXT: [[T2:%.*]] = bitcast i64 [[T21]] to <2 x i32>
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; CHECK-NEXT: ret <2 x i32> [[T2]]
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;
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%t1 = bitcast i64 %a to <2 x i32>
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%t2 = or <2 x i32> %t1, <i32 1, i32 2>
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ret <2 x i32> %t2
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}
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; PR27925 - https://llvm.org/bugs/show_bug.cgi?id=27925
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define <4 x i32> @bitcasts_and_bitcast(<4 x i32> %a, <8 x i16> %b) {
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; CHECK-LABEL: @bitcasts_and_bitcast(
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast <8 x i16> %b to <4 x i32>
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; CHECK-NEXT: [[BC3:%.*]] = and <4 x i32> [[TMP1]], %a
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; CHECK-NEXT: ret <4 x i32> [[BC3]]
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;
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%bc1 = bitcast <4 x i32> %a to <2 x i64>
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%bc2 = bitcast <8 x i16> %b to <2 x i64>
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%and = and <2 x i64> %bc2, %bc1
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%bc3 = bitcast <2 x i64> %and to <4 x i32>
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ret <4 x i32> %bc3
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}
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; The destination must have an integer element type.
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; FIXME: We can still eliminate one bitcast in this test by doing the logic op
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; in the type of the input that has an integer element type.
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define <4 x float> @bitcasts_and_bitcast_to_fp(<4 x float> %a, <8 x i16> %b) {
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; CHECK-LABEL: @bitcasts_and_bitcast_to_fp(
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; CHECK-NEXT: [[BC1:%.*]] = bitcast <4 x float> %a to <2 x i64>
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; CHECK-NEXT: [[BC2:%.*]] = bitcast <8 x i16> %b to <2 x i64>
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; CHECK-NEXT: [[AND:%.*]] = and <2 x i64> [[BC2]], [[BC1]]
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; CHECK-NEXT: [[BC3:%.*]] = bitcast <2 x i64> [[AND]] to <4 x float>
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; CHECK-NEXT: ret <4 x float> [[BC3]]
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;
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%bc1 = bitcast <4 x float> %a to <2 x i64>
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%bc2 = bitcast <8 x i16> %b to <2 x i64>
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%and = and <2 x i64> %bc2, %bc1
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%bc3 = bitcast <2 x i64> %and to <4 x float>
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ret <4 x float> %bc3
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}
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; FIXME: Transform limited from changing vector op to integer op to avoid codegen problems.
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define i128 @bitcast_or_bitcast(i128 %a, <2 x i64> %b) {
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; CHECK-LABEL: @bitcast_or_bitcast(
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; CHECK-NEXT: [[BC1:%.*]] = bitcast i128 %a to <2 x i64>
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; CHECK-NEXT: [[OR:%.*]] = or <2 x i64> [[BC1]], %b
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; CHECK-NEXT: [[BC2:%.*]] = bitcast <2 x i64> [[OR]] to i128
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; CHECK-NEXT: ret i128 [[BC2]]
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;
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%bc1 = bitcast i128 %a to <2 x i64>
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%or = or <2 x i64> %b, %bc1
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%bc2 = bitcast <2 x i64> %or to i128
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ret i128 %bc2
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}
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; FIXME: Transform limited from changing integer op to vector op to avoid codegen problems.
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define <4 x i32> @bitcast_xor_bitcast(<4 x i32> %a, i128 %b) {
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; CHECK-LABEL: @bitcast_xor_bitcast(
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; CHECK-NEXT: [[BC1:%.*]] = bitcast <4 x i32> %a to i128
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; CHECK-NEXT: [[XOR:%.*]] = xor i128 [[BC1]], %b
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; CHECK-NEXT: [[BC2:%.*]] = bitcast i128 [[XOR]] to <4 x i32>
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; CHECK-NEXT: ret <4 x i32> [[BC2]]
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;
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%bc1 = bitcast <4 x i32> %a to i128
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%xor = xor i128 %bc1, %b
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%bc2 = bitcast i128 %xor to <4 x i32>
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ret <4 x i32> %bc2
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}
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; https://llvm.org/bugs/show_bug.cgi?id=6137#c6
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define <4 x float> @bitcast_vector_select(<4 x float> %x, <2 x i64> %y, <4 x i1> %cmp) {
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; CHECK-LABEL: @bitcast_vector_select(
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast <2 x i64> %y to <4 x float>
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; CHECK-NEXT: [[T7:%.*]] = select <4 x i1> %cmp, <4 x float> %x, <4 x float> [[TMP1]]
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; CHECK-NEXT: ret <4 x float> [[T7]]
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;
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%t4 = bitcast <4 x float> %x to <4 x i32>
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%t5 = bitcast <2 x i64> %y to <4 x i32>
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%t6 = select <4 x i1> %cmp, <4 x i32> %t4, <4 x i32> %t5
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%t7 = bitcast <4 x i32> %t6 to <4 x float>
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ret <4 x float> %t7
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}
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define float @bitcast_scalar_select_of_scalars(float %x, i32 %y, i1 %cmp) {
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; CHECK-LABEL: @bitcast_scalar_select_of_scalars(
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32 %y to float
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; CHECK-NEXT: [[T7:%.*]] = select i1 %cmp, float %x, float [[TMP1]]
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; CHECK-NEXT: ret float [[T7]]
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;
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%t4 = bitcast float %x to i32
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%t6 = select i1 %cmp, i32 %t4, i32 %y
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%t7 = bitcast i32 %t6 to float
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ret float %t7
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}
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; FIXME: We should change the select operand types to scalars, but we need to make
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; sure the backend can reverse that transform if needed.
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define float @bitcast_scalar_select_type_mismatch1(float %x, <4 x i8> %y, i1 %cmp) {
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; CHECK-LABEL: @bitcast_scalar_select_type_mismatch1(
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; CHECK-NEXT: [[T4:%.*]] = bitcast float %x to <4 x i8>
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; CHECK-NEXT: [[T6:%.*]] = select i1 %cmp, <4 x i8> [[T4]], <4 x i8> %y
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; CHECK-NEXT: [[T7:%.*]] = bitcast <4 x i8> [[T6]] to float
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; CHECK-NEXT: ret float [[T7]]
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;
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%t4 = bitcast float %x to <4 x i8>
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%t6 = select i1 %cmp, <4 x i8> %t4, <4 x i8> %y
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%t7 = bitcast <4 x i8> %t6 to float
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ret float %t7
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}
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; FIXME: We should change the select operand types to vectors, but we need to make
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; sure the backend can reverse that transform if needed.
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define <4 x i8> @bitcast_scalar_select_type_mismatch2(<4 x i8> %x, float %y, i1 %cmp) {
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; CHECK-LABEL: @bitcast_scalar_select_type_mismatch2(
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; CHECK-NEXT: [[T4:%.*]] = bitcast <4 x i8> %x to float
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; CHECK-NEXT: [[T6:%.*]] = select i1 %cmp, float [[T4]], float %y
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; CHECK-NEXT: [[T7:%.*]] = bitcast float [[T6]] to <4 x i8>
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; CHECK-NEXT: ret <4 x i8> [[T7]]
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;
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%t4 = bitcast <4 x i8> %x to float
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%t6 = select i1 %cmp, float %t4, float %y
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%t7 = bitcast float %t6 to <4 x i8>
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ret <4 x i8> %t7
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}
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define <4 x float> @bitcast_scalar_select_of_vectors(<4 x float> %x, <2 x i64> %y, i1 %cmp) {
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; CHECK-LABEL: @bitcast_scalar_select_of_vectors(
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast <2 x i64> %y to <4 x float>
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; CHECK-NEXT: [[T7:%.*]] = select i1 %cmp, <4 x float> %x, <4 x float> [[TMP1]]
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; CHECK-NEXT: ret <4 x float> [[T7]]
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;
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%t4 = bitcast <4 x float> %x to <4 x i32>
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%t5 = bitcast <2 x i64> %y to <4 x i32>
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%t6 = select i1 %cmp, <4 x i32> %t4, <4 x i32> %t5
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%t7 = bitcast <4 x i32> %t6 to <4 x float>
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ret <4 x float> %t7
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}
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; Can't change the type of the vector select if the dest type is scalar.
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define float @bitcast_vector_select_no_fold1(float %x, <2 x i16> %y, <4 x i1> %cmp) {
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; CHECK-LABEL: @bitcast_vector_select_no_fold1(
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; CHECK-NEXT: [[T4:%.*]] = bitcast float %x to <4 x i8>
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; CHECK-NEXT: [[T5:%.*]] = bitcast <2 x i16> %y to <4 x i8>
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; CHECK-NEXT: [[T6:%.*]] = select <4 x i1> %cmp, <4 x i8> [[T4]], <4 x i8> [[T5]]
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; CHECK-NEXT: [[T7:%.*]] = bitcast <4 x i8> [[T6]] to float
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; CHECK-NEXT: ret float [[T7]]
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;
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%t4 = bitcast float %x to <4 x i8>
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%t5 = bitcast <2 x i16> %y to <4 x i8>
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%t6 = select <4 x i1> %cmp, <4 x i8> %t4, <4 x i8> %t5
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%t7 = bitcast <4 x i8> %t6 to float
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ret float %t7
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}
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; Can't change the type of the vector select if the number of elements in the dest type is not the same.
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define <2 x float> @bitcast_vector_select_no_fold2(<2 x float> %x, <4 x i16> %y, <8 x i1> %cmp) {
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; CHECK-LABEL: @bitcast_vector_select_no_fold2(
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; CHECK-NEXT: [[T4:%.*]] = bitcast <2 x float> %x to <8 x i8>
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; CHECK-NEXT: [[T5:%.*]] = bitcast <4 x i16> %y to <8 x i8>
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; CHECK-NEXT: [[T6:%.*]] = select <8 x i1> %cmp, <8 x i8> [[T4]], <8 x i8> [[T5]]
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; CHECK-NEXT: [[T7:%.*]] = bitcast <8 x i8> [[T6]] to <2 x float>
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; CHECK-NEXT: ret <2 x float> [[T7]]
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;
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%t4 = bitcast <2 x float> %x to <8 x i8>
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%t5 = bitcast <4 x i16> %y to <8 x i8>
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%t6 = select <8 x i1> %cmp, <8 x i8> %t4, <8 x i8> %t5
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%t7 = bitcast <8 x i8> %t6 to <2 x float>
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ret <2 x float> %t7
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}
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; Optimize bitcasts that are extracting low element of vector. This happens because of SRoA.
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; rdar://7892780
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define float @test2(<2 x float> %A, <2 x i32> %B) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[TMP24:%.*]] = extractelement <2 x float> %A, i32 0
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; CHECK-NEXT: [[BC:%.*]] = bitcast <2 x i32> %B to <2 x float>
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; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x float> [[BC]], i32 0
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; CHECK-NEXT: [[ADD:%.*]] = fadd float [[TMP24]], [[TMP4]]
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; CHECK-NEXT: ret float [[ADD]]
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;
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%tmp28 = bitcast <2 x float> %A to i64 ; <i64> [#uses=2]
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%tmp23 = trunc i64 %tmp28 to i32 ; <i32> [#uses=1]
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%tmp24 = bitcast i32 %tmp23 to float ; <float> [#uses=1]
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%tmp = bitcast <2 x i32> %B to i64
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%tmp2 = trunc i64 %tmp to i32 ; <i32> [#uses=1]
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%tmp4 = bitcast i32 %tmp2 to float ; <float> [#uses=1]
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%add = fadd float %tmp24, %tmp4
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ret float %add
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}
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; Optimize bitcasts that are extracting other elements of a vector. This happens because of SRoA.
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; rdar://7892780
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define float @test3(<2 x float> %A, <2 x i64> %B) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[TMP24:%.*]] = extractelement <2 x float> %A, i32 1
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; CHECK-NEXT: [[BC2:%.*]] = bitcast <2 x i64> %B to <4 x float>
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; CHECK-NEXT: [[TMP4:%.*]] = extractelement <4 x float> [[BC2]], i32 2
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; CHECK-NEXT: [[ADD:%.*]] = fadd float [[TMP24]], [[TMP4]]
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; CHECK-NEXT: ret float [[ADD]]
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;
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%tmp28 = bitcast <2 x float> %A to i64
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%tmp29 = lshr i64 %tmp28, 32
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%tmp23 = trunc i64 %tmp29 to i32
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%tmp24 = bitcast i32 %tmp23 to float
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%tmp = bitcast <2 x i64> %B to i128
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%tmp1 = lshr i128 %tmp, 64
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%tmp2 = trunc i128 %tmp1 to i32
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%tmp4 = bitcast i32 %tmp2 to float
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%add = fadd float %tmp24, %tmp4
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ret float %add
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}
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; Both bitcasts are unnecessary; change the extractelement.
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define float @bitcast_extelt1(<2 x float> %A) {
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; CHECK-LABEL: @bitcast_extelt1(
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; CHECK-NEXT: [[BC2:%.*]] = extractelement <2 x float> %A, i32 0
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; CHECK-NEXT: ret float [[BC2]]
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;
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%bc1 = bitcast <2 x float> %A to <2 x i32>
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%ext = extractelement <2 x i32> %bc1, i32 0
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%bc2 = bitcast i32 %ext to float
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ret float %bc2
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}
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; Second bitcast can be folded into the first.
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define i64 @bitcast_extelt2(<4 x float> %A) {
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; CHECK-LABEL: @bitcast_extelt2(
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; CHECK-NEXT: [[BC:%.*]] = bitcast <4 x float> %A to <2 x i64>
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; CHECK-NEXT: [[BC2:%.*]] = extractelement <2 x i64> [[BC]], i32 1
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; CHECK-NEXT: ret i64 [[BC2]]
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;
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%bc1 = bitcast <4 x float> %A to <2 x double>
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%ext = extractelement <2 x double> %bc1, i32 1
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%bc2 = bitcast double %ext to i64
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ret i64 %bc2
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}
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; TODO: This should return %A.
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define <2 x i32> @bitcast_extelt3(<2 x i32> %A) {
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; CHECK-LABEL: @bitcast_extelt3(
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; CHECK-NEXT: [[BC1:%.*]] = bitcast <2 x i32> %A to <1 x i64>
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; CHECK-NEXT: [[EXT:%.*]] = extractelement <1 x i64> [[BC1]], i32 0
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; CHECK-NEXT: [[BC2:%.*]] = bitcast i64 [[EXT]] to <2 x i32>
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; CHECK-NEXT: ret <2 x i32> [[BC2]]
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;
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%bc1 = bitcast <2 x i32> %A to <1 x i64>
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%ext = extractelement <1 x i64> %bc1, i32 0
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%bc2 = bitcast i64 %ext to <2 x i32>
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ret <2 x i32> %bc2
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}
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; Handle the case where the input is not a vector.
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define double @bitcast_extelt4(i128 %A) {
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; CHECK-LABEL: @bitcast_extelt4(
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; CHECK-NEXT: [[BC:%.*]] = bitcast i128 %A to <2 x double>
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; CHECK-NEXT: [[BC2:%.*]] = extractelement <2 x double> [[BC]], i32 0
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; CHECK-NEXT: ret double [[BC2]]
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;
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%bc1 = bitcast i128 %A to <2 x i64>
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%ext = extractelement <2 x i64> %bc1, i32 0
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%bc2 = bitcast i64 %ext to double
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ret double %bc2
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}
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define <2 x i32> @test4(i32 %A, i32 %B){
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x i32> undef, i32 %A, i32 0
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; CHECK-NEXT: [[TMP2:%.*]] = insertelement <2 x i32> [[TMP1]], i32 %B, i32 1
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; CHECK-NEXT: ret <2 x i32> [[TMP2]]
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;
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%tmp38 = zext i32 %A to i64
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%tmp32 = zext i32 %B to i64
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%tmp33 = shl i64 %tmp32, 32
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%ins35 = or i64 %tmp33, %tmp38
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%tmp43 = bitcast i64 %ins35 to <2 x i32>
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ret <2 x i32> %tmp43
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}
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; rdar://8360454
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define <2 x float> @test5(float %A, float %B) {
|
|
; CHECK-LABEL: @test5(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x float> undef, float %A, i32 0
|
|
; CHECK-NEXT: [[TMP2:%.*]] = insertelement <2 x float> [[TMP1]], float %B, i32 1
|
|
; CHECK-NEXT: ret <2 x float> [[TMP2]]
|
|
;
|
|
%tmp37 = bitcast float %A to i32
|
|
%tmp38 = zext i32 %tmp37 to i64
|
|
%tmp31 = bitcast float %B to i32
|
|
%tmp32 = zext i32 %tmp31 to i64
|
|
%tmp33 = shl i64 %tmp32, 32
|
|
%ins35 = or i64 %tmp33, %tmp38
|
|
%tmp43 = bitcast i64 %ins35 to <2 x float>
|
|
ret <2 x float> %tmp43
|
|
}
|
|
|
|
define <2 x float> @test6(float %A){
|
|
; CHECK-LABEL: @test6(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x float> <float 4.200000e+01, float undef>, float %A, i32 1
|
|
; CHECK-NEXT: ret <2 x float> [[TMP1]]
|
|
;
|
|
%tmp23 = bitcast float %A to i32
|
|
%tmp24 = zext i32 %tmp23 to i64
|
|
%tmp25 = shl i64 %tmp24, 32
|
|
%mask20 = or i64 %tmp25, 1109917696
|
|
%tmp35 = bitcast i64 %mask20 to <2 x float>
|
|
ret <2 x float> %tmp35
|
|
}
|
|
|
|
define i64 @ISPC0(i64 %in) {
|
|
; CHECK-LABEL: @ISPC0(
|
|
; CHECK-NEXT: ret i64 0
|
|
;
|
|
%out = and i64 %in, xor (i64 bitcast (<4 x i16> <i16 -1, i16 -1, i16 -1, i16 -1> to i64), i64 -1)
|
|
ret i64 %out
|
|
}
|
|
|
|
|
|
define i64 @Vec2(i64 %in) {
|
|
; CHECK-LABEL: @Vec2(
|
|
; CHECK-NEXT: ret i64 0
|
|
;
|
|
%out = and i64 %in, xor (i64 bitcast (<4 x i16> <i16 0, i16 0, i16 0, i16 0> to i64), i64 0)
|
|
ret i64 %out
|
|
}
|
|
|
|
define i64 @All11(i64 %in) {
|
|
; CHECK-LABEL: @All11(
|
|
; CHECK-NEXT: ret i64 0
|
|
;
|
|
%out = and i64 %in, xor (i64 bitcast (<2 x float> bitcast (i64 -1 to <2 x float>) to i64), i64 -1)
|
|
ret i64 %out
|
|
}
|
|
|
|
|
|
define i32 @All111(i32 %in) {
|
|
; CHECK-LABEL: @All111(
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
%out = and i32 %in, xor (i32 bitcast (<1 x float> bitcast (i32 -1 to <1 x float>) to i32), i32 -1)
|
|
ret i32 %out
|
|
}
|
|
|
|
define <2 x i16> @BitcastInsert(i32 %a) {
|
|
; CHECK-LABEL: @BitcastInsert(
|
|
; CHECK-NEXT: [[R:%.*]] = bitcast i32 %a to <2 x i16>
|
|
; CHECK-NEXT: ret <2 x i16> [[R]]
|
|
;
|
|
%v = insertelement <1 x i32> undef, i32 %a, i32 0
|
|
%r = bitcast <1 x i32> %v to <2 x i16>
|
|
ret <2 x i16> %r
|
|
}
|
|
|
|
; PR17293
|
|
define <2 x i64> @test7(<2 x i8*>* %arg) nounwind {
|
|
; CHECK-LABEL: @test7(
|
|
; CHECK-NEXT: [[CAST:%.*]] = bitcast <2 x i8*>* %arg to <2 x i64>*
|
|
; CHECK-NEXT: [[LOAD:%.*]] = load <2 x i64>, <2 x i64>* [[CAST]], align 16
|
|
; CHECK-NEXT: ret <2 x i64> [[LOAD]]
|
|
;
|
|
%cast = bitcast <2 x i8*>* %arg to <2 x i64>*
|
|
%load = load <2 x i64>, <2 x i64>* %cast, align 16
|
|
ret <2 x i64> %load
|
|
}
|
|
|
|
define i8 @test8() {
|
|
; CHECK-LABEL: @test8(
|
|
; CHECK-NEXT: ret i8 -85
|
|
;
|
|
%res = bitcast <8 x i1> <i1 true, i1 true, i1 false, i1 true, i1 false, i1 true, i1 false, i1 true> to i8
|
|
ret i8 %res
|
|
}
|