26 lines
621 B
LLVM
26 lines
621 B
LLVM
; This is a basic sanity check for constant propagation. It tests the basic
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; logic operations.
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; RUN: opt < %s -sccp -S | not grep and
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; RUN: opt < %s -sccp -S | not grep trunc
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; RUN: opt < %s -sccp -S | grep "ret i100 -1"
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define i100 @test(i133 %A) {
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%B = and i133 0, %A
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%C = icmp sgt i133 %B, 0
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br i1 %C, label %BB1, label %BB2
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BB1:
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%t3 = xor i133 %B, -1
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%t4 = trunc i133 %t3 to i100
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br label %BB3
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BB2:
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%f1 = or i133 -1, %A
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%f2 = lshr i133 %f1, 33
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%f3 = trunc i133 %f2 to i100
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br label %BB3
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BB3:
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%Ret = phi i100 [%t4, %BB1], [%f3, %BB2]
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ret i100 %Ret
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}
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