forked from OSchip/llvm-project
108 lines
2.3 KiB
LLVM
108 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instsimplify -S | FileCheck %s
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define i47 @shl_by_0(i47 %A) {
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; CHECK-LABEL: @shl_by_0(
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; CHECK-NEXT: ret i47 [[A:%.*]]
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;
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%B = shl i47 %A, 0
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ret i47 %B
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}
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define i41 @shl_0(i41 %X) {
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; CHECK-LABEL: @shl_0(
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; CHECK-NEXT: ret i41 0
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;
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%B = shl i41 0, %X
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ret i41 %B
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}
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define i41 @ashr_by_0(i41 %A) {
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; CHECK-LABEL: @ashr_by_0(
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; CHECK-NEXT: ret i41 [[A:%.*]]
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;
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%B = ashr i41 %A, 0
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ret i41 %B
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}
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define i39 @ashr_0(i39 %X) {
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; CHECK-LABEL: @ashr_0(
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; CHECK-NEXT: ret i39 0
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;
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%B = ashr i39 0, %X
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ret i39 %B
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}
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define i55 @lshr_by_bitwidth(i55 %A) {
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; CHECK-LABEL: @lshr_by_bitwidth(
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; CHECK-NEXT: ret i55 undef
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;
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%B = lshr i55 %A, 55
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ret i55 %B
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}
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define i32 @shl_by_bitwidth(i32 %A) {
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; CHECK-LABEL: @shl_by_bitwidth(
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; CHECK-NEXT: ret i32 undef
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;
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%B = shl i32 %A, 32
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ret i32 %B
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}
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define <4 x i32> @lshr_by_bitwidth_splat(<4 x i32> %A) {
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; CHECK-LABEL: @lshr_by_bitwidth_splat(
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; CHECK-NEXT: ret <4 x i32> undef
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;
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%B = lshr <4 x i32> %A, <i32 32, i32 32, i32 32, i32 32> ;; shift all bits out
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ret <4 x i32> %B
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}
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define <4 x i32> @lshr_by_0_splat(<4 x i32> %A) {
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; CHECK-LABEL: @lshr_by_0_splat(
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; CHECK-NEXT: ret <4 x i32> [[A:%.*]]
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;
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%B = lshr <4 x i32> %A, zeroinitializer
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ret <4 x i32> %B
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}
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define <4 x i32> @shl_by_bitwidth_splat(<4 x i32> %A) {
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; CHECK-LABEL: @shl_by_bitwidth_splat(
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; CHECK-NEXT: ret <4 x i32> undef
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;
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%B = shl <4 x i32> %A, <i32 32, i32 32, i32 32, i32 32> ;; shift all bits out
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ret <4 x i32> %B
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}
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define i32 @ashr_undef() {
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; CHECK-LABEL: @ashr_undef(
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; CHECK-NEXT: ret i32 0
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;
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%B = ashr i32 undef, 2 ;; top two bits must be equal, so not undef
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ret i32 %B
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}
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define i32 @ashr_undef_variable_shift_amount(i32 %A) {
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; CHECK-LABEL: @ashr_undef_variable_shift_amount(
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; CHECK-NEXT: ret i32 0
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;
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%B = ashr i32 undef, %A ;; top %A bits must be equal, so not undef
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ret i32 %B
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}
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define i32 @ashr_all_ones(i32 %A) {
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; CHECK-LABEL: @ashr_all_ones(
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; CHECK-NEXT: ret i32 -1
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;
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%B = ashr i32 -1, %A
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ret i32 %B
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}
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define <3 x i8> @ashr_all_ones_vec_with_undef_elts(<3 x i8> %x, <3 x i8> %y) {
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; CHECK-LABEL: @ashr_all_ones_vec_with_undef_elts(
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; CHECK-NEXT: ret <3 x i8> <i8 -1, i8 -1, i8 -1>
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;
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%sh = ashr <3 x i8> <i8 undef, i8 -1, i8 undef>, %y
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ret <3 x i8> %sh
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}
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