derek.holloway
7502bf64a4
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70 lines
2.2 KiB
LLVM
70 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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define i1 @test_imply_not1(i32 %depth) {
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; CHECK-LABEL: define i1 @test_imply_not1(
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; CHECK-SAME: i32 [[DEPTH:%.*]]) {
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; CHECK-NEXT: [[CMP1_NOT1:%.*]] = icmp eq i32 [[DEPTH]], 16
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; CHECK-NEXT: call void @use(i1 [[CMP1_NOT1]])
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; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[DEPTH]], 8
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; CHECK-NEXT: call void @use(i1 [[CMP2]])
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; CHECK-NEXT: br i1 [[CMP1_NOT1]], label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: call void @func1()
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; CHECK-NEXT: unreachable
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; CHECK: if.else:
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; CHECK-NEXT: call void @func2()
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; CHECK-NEXT: unreachable
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;
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%cmp1 = icmp eq i32 %depth, 16
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call void @use(i1 %cmp1)
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%cmp2 = icmp slt i32 %depth, 8
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call void @use(i1 %cmp2)
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%cmp.not = xor i1 %cmp1, true
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%brmerge = or i1 %cmp2, %cmp.not
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br i1 %brmerge, label %if.then, label %if.else
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if.then:
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call void @func1()
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unreachable
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if.else:
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call void @func2()
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unreachable
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}
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define i1 @test_imply_not2(i32 %a, i1 %cmp2) {
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; CHECK-LABEL: define i1 @test_imply_not2(
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; CHECK-SAME: i32 [[A:%.*]], i1 [[CMP2:%.*]]) {
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ne i32 [[A]], 0
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; CHECK-NEXT: [[BRMERGE:%.*]] = select i1 [[CMP1]], i1 true, i1 [[CMP2]]
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; CHECK-NEXT: ret i1 [[BRMERGE]]
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;
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%cmp1 = icmp eq i32 %a, 0
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%or.cond = select i1 %cmp1, i1 %cmp2, i1 false
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%cmp.not = xor i1 %cmp1, true
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%brmerge = or i1 %or.cond, %cmp.not
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ret i1 %brmerge
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}
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define i1 @test_imply_not3(i32 %a, i32 %b, i1 %cond) {
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; CHECK-LABEL: define i1 @test_imply_not3(
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; CHECK-SAME: i32 [[A:%.*]], i32 [[B:%.*]], i1 [[COND:%.*]]) {
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; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[A]], [[B]]
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; CHECK-NEXT: call void @use(i1 [[CMP1]])
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; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[A]], [[B]]
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; CHECK-NEXT: [[AND:%.*]] = select i1 [[CMP2]], i1 [[COND]], i1 false
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; CHECK-NEXT: ret i1 [[AND]]
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;
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%cmp1 = icmp eq i32 %a, %b
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call void @use(i1 %cmp1)
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%cmp2 = icmp slt i32 %a, %b
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%cmp.not = xor i1 %cmp1, true
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%sel = select i1 %cmp.not, i1 %cond, i1 false
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%and = and i1 %cmp2, %sel
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ret i1 %and
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}
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declare void @func1()
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declare void @func2()
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declare void @use(i1)
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