90 lines
2.1 KiB
LLVM
90 lines
2.1 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -jump-threading -S < %s | FileCheck %s
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declare i32 @f1()
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declare i32 @f2()
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declare void @f3()
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; trunc(and) should be simplified
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define i32 @test(i1 %cond0) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: br i1 [[COND0:%.*]], label [[T1:%.*]], label [[F1:%.*]]
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; CHECK: T1:
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; CHECK-NEXT: [[V1:%.*]] = call i32 @f1()
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; CHECK-NEXT: br label [[F2:%.*]]
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; CHECK: F1:
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; CHECK-NEXT: [[V2:%.*]] = call i32 @f2()
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; CHECK-NEXT: br label [[F2]]
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; CHECK: F2:
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; CHECK-NEXT: [[A:%.*]] = phi i32 [ 10, [[T1]] ], [ 0, [[F1]] ]
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; CHECK-NEXT: [[B:%.*]] = phi i32 [ [[V1]], [[T1]] ], [ [[V2]], [[F1]] ]
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; CHECK-NEXT: [[AND:%.*]] = and i32 [[A]], 1
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; CHECK-NEXT: ret i32 [[B]]
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;
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br i1 %cond0, label %T1, label %F1
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T1:
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%v1 = call i32 @f1()
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br label %Merge
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F1:
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%v2 = call i32 @f2()
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br label %Merge
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Merge:
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%A = phi i32 [10, %T1], [0, %F1]
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%B = phi i32 [%v1, %T1], [%v2, %F1]
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%And = and i32 %A, 1
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%cond = trunc i32 %And to i1
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br i1 %cond, label %T2, label %F2
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T2:
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call void @f3()
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ret i32 %B
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F2:
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ret i32 %B
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}
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; trunc(select) should be simplified
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define i32 @test2(i1 %cond0) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: br i1 [[COND0:%.*]], label [[T1:%.*]], label [[F1:%.*]]
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; CHECK: T1:
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; CHECK-NEXT: [[V1:%.*]] = call i32 @f1()
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; CHECK-NEXT: br label [[F2:%.*]]
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; CHECK: F1:
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; CHECK-NEXT: [[V2:%.*]] = call i32 @f2()
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; CHECK-NEXT: br label [[F2]]
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; CHECK: F2:
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; CHECK-NEXT: [[A:%.*]] = phi i1 [ true, [[T1]] ], [ false, [[F1]] ]
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; CHECK-NEXT: [[B:%.*]] = phi i32 [ [[V1]], [[T1]] ], [ [[V2]], [[F1]] ]
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; CHECK-NEXT: [[A2:%.*]] = xor i1 [[A]], true
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[A2]], i32 10, i32 0
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; CHECK-NEXT: ret i32 [[B]]
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;
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br i1 %cond0, label %T1, label %F1
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T1:
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%v1 = call i32 @f1()
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br label %Merge
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F1:
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%v2 = call i32 @f2()
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br label %Merge
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Merge:
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%A = phi i1 [1, %T1], [0, %F1]
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%B = phi i32 [%v1, %T1], [%v2, %F1]
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%A2 = xor i1 %A, 1
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%sel = select i1 %A2, i32 10, i32 0
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%cond = trunc i32 %sel to i1
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br i1 %cond, label %T2, label %F2
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T2:
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call void @f3()
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ret i32 %B
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F2:
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ret i32 %B
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}
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