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43 lines
843 B
LLVM
43 lines
843 B
LLVM
; RUN: opt < %s -constprop -die -S | FileCheck %s
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; This is a basic sanity check for constant propagation. The add instruction
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; should be eliminated.
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define i32 @test1(i1 %B) {
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br i1 %B, label %BB1, label %BB2
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BB1:
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%Val = add i32 0, 0
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br label %BB3
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BB2:
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br label %BB3
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BB3:
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; CHECK: @test1
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; CHECK: %Ret = phi i32 [ 0, %BB1 ], [ 1, %BB2 ]
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%Ret = phi i32 [ %Val, %BB1 ], [ 1, %BB2 ]
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ret i32 %Ret
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}
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; PR6197
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define i1 @test2(i8* %f) nounwind {
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entry:
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%V = icmp ne i8* blockaddress(@test2, %bb), null
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br label %bb
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bb:
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ret i1 %V
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; CHECK: @test2
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; CHECK: ret i1 true
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}
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define i1 @TNAN() {
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; CHECK: @TNAN
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; CHECK: ret i1 true
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%A = fcmp uno double 0x7FF8000000000000, 1.000000e+00
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%B = fcmp uno double 1.230000e+02, 1.000000e+00
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%C = or i1 %A, %B
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ret i1 %C
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}
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