147 lines
4.1 KiB
LLVM
147 lines
4.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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declare void @use(i32)
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define i1 @cmpeq_xor_cst1(i32 %a, i32 %b) {
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; CHECK-LABEL: @cmpeq_xor_cst1(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP1]], 10
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%c = xor i32 %a, 10
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%cmp = icmp eq i32 %c, %b
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ret i1 %cmp
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}
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define i1 @cmpeq_xor_cst2(i32 %a, i32 %b) {
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; CHECK-LABEL: @cmpeq_xor_cst2(
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; CHECK-NEXT: [[C:%.*]] = xor i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C]], 10
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%c = xor i32 %a, %b
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%cmp = icmp eq i32 %c, 10
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ret i1 %cmp
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}
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define i1 @cmpeq_xor_cst3(i32 %a, i32 %b) {
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; CHECK-LABEL: @cmpeq_xor_cst3(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%c = xor i32 %a, 10
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%d = xor i32 %b, 10
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%cmp = icmp eq i32 %c, %d
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ret i1 %cmp
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}
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define i1 @cmpne_xor_cst1(i32 %a, i32 %b) {
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; CHECK-LABEL: @cmpne_xor_cst1(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP1]], 10
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%c = xor i32 %a, 10
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%cmp = icmp ne i32 %c, %b
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ret i1 %cmp
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}
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define i1 @cmpne_xor_cst2(i32 %a, i32 %b) {
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; CHECK-LABEL: @cmpne_xor_cst2(
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; CHECK-NEXT: [[C:%.*]] = xor i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[C]], 10
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%c = xor i32 %a, %b
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%cmp = icmp ne i32 %c, 10
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ret i1 %cmp
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}
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define i1 @cmpne_xor_cst3(i32 %a, i32 %b) {
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; CHECK-LABEL: @cmpne_xor_cst3(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%c = xor i32 %a, 10
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%d = xor i32 %b, 10
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%cmp = icmp ne i32 %c, %d
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ret i1 %cmp
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}
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define i1 @cmpeq_xor_cst1_multiuse(i32 %a, i32 %b) {
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; CHECK-LABEL: @cmpeq_xor_cst1_multiuse(
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; CHECK-NEXT: [[C:%.*]] = xor i32 [[A:%.*]], 10
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; CHECK-NEXT: call void @use(i32 [[C]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C]], [[B:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%c = xor i32 %a, 10
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call void @use(i32 %c)
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%cmp = icmp eq i32 %c, %b
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ret i1 %cmp
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}
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define i1 @cmpeq_xor_cst1_commuted(i32 %a, i32 %b) {
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; CHECK-LABEL: @cmpeq_xor_cst1_commuted(
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; CHECK-NEXT: [[B2:%.*]] = mul i32 [[B:%.*]], [[B]]
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; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[B2]], [[A:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP1]], 10
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%b2 = mul i32 %b, %b ; thwart complexity-based canonicalization
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%c = xor i32 %a, 10
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%cmp = icmp eq i32 %b2, %c
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ret i1 %cmp
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}
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define <2 x i1> @cmpeq_xor_cst1_vec(<2 x i32> %a, <2 x i32> %b) {
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; CHECK-LABEL: @cmpeq_xor_cst1_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i32> [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq <2 x i32> [[TMP1]], <i32 10, i32 11>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%c = xor <2 x i32> %a, <i32 10, i32 11>
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%cmp = icmp eq <2 x i32> %b, %c
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ret <2 x i1> %cmp
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}
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; tests from PR65968
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define i1 @foo1(i32 %x, i32 %y) {
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; CHECK-LABEL: @foo1(
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; CHECK-NEXT: [[NEG1:%.*]] = xor i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[NEG1]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%and = and i32 %x, -2147483648
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%neg = xor i32 %y, -1
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%and1 = and i32 %neg, -2147483648
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%cmp = icmp eq i32 %and, %and1
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ret i1 %cmp
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}
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define i1 @foo2(i32 %x, i32 %y) {
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; CHECK-LABEL: @foo2(
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; CHECK-NEXT: [[NEG1:%.*]] = xor i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[NEG1]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%and = and i32 %x, -2147483648
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%neg = and i32 %y, -2147483648
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%and1 = xor i32 %neg, -2147483648
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%cmp = icmp eq i32 %and, %and1
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ret i1 %cmp
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}
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; tests from PR67783
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define <2 x i1> @foo3(<2 x i8> %x) {
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; CHECK-LABEL: @foo3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[XOR:%.*]] = xor <2 x i8> [[X:%.*]], <i8 -2, i8 -1>
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne <2 x i8> [[XOR]], <i8 9, i8 79>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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entry:
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%xor = xor <2 x i8> %x, <i8 -2, i8 -1>
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%cmp = icmp ne <2 x i8> %xor, <i8 9, i8 79>
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ret <2 x i1> %cmp
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}
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