derek.holloway
7502bf64a4
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119 lines
3.3 KiB
LLVM
119 lines
3.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; Test for (x & y) + ~(x | y) -> ~(x ^ y)
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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; (x & y) + ~(x | y)
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define i32 @src(i32 noundef %0, i32 noundef %1) {
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; CHECK-LABEL: @src(
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; CHECK-NEXT: [[TMP3:%.*]] = xor i32 [[TMP1:%.*]], [[TMP0:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = xor i32 [[TMP3]], -1
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; CHECK-NEXT: ret i32 [[TMP4]]
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;
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%3 = and i32 %1, %0
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%4 = or i32 %1, %0
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%5 = xor i32 %4, -1
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%6 = add i32 %3, %5
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ret i32 %6
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}
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; vector version of src
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define <2 x i32> @src_vec(<2 x i32> noundef %0, <2 x i32> noundef %1) {
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; CHECK-LABEL: @src_vec(
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; CHECK-NEXT: [[TMP3:%.*]] = xor <2 x i32> [[TMP1:%.*]], [[TMP0:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = xor <2 x i32> [[TMP3]], splat (i32 -1)
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; CHECK-NEXT: ret <2 x i32> [[TMP4]]
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;
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%3 = and <2 x i32> %1, %0
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%4 = or <2 x i32> %1, %0
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%5 = xor <2 x i32> %4, <i32 -1, i32 -1>
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%6 = add <2 x i32> %3, %5
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ret <2 x i32> %6
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}
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; vector version of src with poison values
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define <2 x i32> @src_vec_poison(<2 x i32> noundef %0, <2 x i32> noundef %1) {
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; CHECK-LABEL: @src_vec_poison(
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; CHECK-NEXT: [[TMP3:%.*]] = xor <2 x i32> [[TMP1:%.*]], [[TMP0:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = xor <2 x i32> [[TMP3]], splat (i32 -1)
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; CHECK-NEXT: ret <2 x i32> [[TMP4]]
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;
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%3 = and <2 x i32> %1, %0
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%4 = or <2 x i32> %1, %0
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%5 = xor <2 x i32> %4, <i32 -1, i32 poison>
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%6 = add <2 x i32> %3, %5
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ret <2 x i32> %6
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}
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; (x & y) + ~(y | x)
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define i32 @src2(i32 noundef %0, i32 noundef %1) {
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; CHECK-LABEL: @src2(
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; CHECK-NEXT: [[TMP3:%.*]] = xor i32 [[TMP1:%.*]], [[TMP0:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = xor i32 [[TMP3]], -1
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; CHECK-NEXT: ret i32 [[TMP4]]
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;
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%3 = and i32 %1, %0
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%4 = or i32 %0, %1
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%5 = xor i32 %4, -1
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%6 = add i32 %3, %5
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ret i32 %6
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}
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; (x & y) + (~x & ~y)
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define i32 @src3(i32 noundef %0, i32 noundef %1) {
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; CHECK-LABEL: @src3(
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; CHECK-NEXT: [[TMP3:%.*]] = xor i32 [[TMP1:%.*]], [[TMP0:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = xor i32 [[TMP3]], -1
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; CHECK-NEXT: ret i32 [[TMP4]]
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;
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%3 = and i32 %1, %0
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%4 = xor i32 %0, -1
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%5 = xor i32 %1, -1
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%6 = and i32 %4, %5
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%7 = add i32 %3, %6
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ret i32 %7
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}
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; ~(x | y) + (y & x)
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define i32 @src4(i32 noundef %0, i32 noundef %1) {
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; CHECK-LABEL: @src4(
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; CHECK-NEXT: [[TMP3:%.*]] = xor i32 [[TMP0:%.*]], [[TMP1:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = xor i32 [[TMP3]], -1
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; CHECK-NEXT: ret i32 [[TMP4]]
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;
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%3 = and i32 %0, %1
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%4 = or i32 %1, %0
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%5 = xor i32 %4, -1
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%6 = add i32 %3, %5
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ret i32 %6
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}
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; ~(x | y) + (x & y)
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define i32 @src5(i32 noundef %0, i32 noundef %1) {
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; CHECK-LABEL: @src5(
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; CHECK-NEXT: [[TMP3:%.*]] = xor i32 [[TMP1:%.*]], [[TMP0:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = xor i32 [[TMP3]], -1
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; CHECK-NEXT: ret i32 [[TMP4]]
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;
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%3 = or i32 %1, %0
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%4 = xor i32 %3, -1
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%5 = and i32 %1, %0
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%6 = add i32 %4, %5
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ret i32 %6
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}
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; (a & b) + ~(c | d)
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define i32 @src6(i32 %0, i32 %1, i32 %2, i32 %3) {
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; CHECK-LABEL: @src6(
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; CHECK-NEXT: [[TMP5:%.*]] = and i32 [[TMP0:%.*]], [[TMP1:%.*]]
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; CHECK-NEXT: [[TMP6:%.*]] = or i32 [[TMP2:%.*]], [[TMP3:%.*]]
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; CHECK-NEXT: [[TMP7:%.*]] = xor i32 [[TMP6]], -1
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; CHECK-NEXT: [[TMP8:%.*]] = add i32 [[TMP5]], [[TMP7]]
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; CHECK-NEXT: ret i32 [[TMP8]]
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;
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%5 = and i32 %0, %1
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%6 = or i32 %2, %3
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%7 = xor i32 %6, -1
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%8 = add i32 %5, %7
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ret i32 %8
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}
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