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https://github.com/c64scene-ar/llvm-6502.git
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1e1446bf84
This logic hadn't been updated to handle FastMathFlags, and it took me a while to detect it because it doesn't show up in a simple search for CreateFAdd. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199629 91177308-0d34-0410-b5e6-96231b3b80d8
32 lines
777 B
LLVM
32 lines
777 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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; CHECK: select
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; CHECK: select
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; Make sure instcombine don't fold select into operands. We don't want to emit
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; select of two integers unless it's selecting 0 / 1.
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define i32 @t1(i32 %c, i32 %x) nounwind {
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%t1 = icmp eq i32 %c, 0
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%t2 = lshr i32 %x, 18
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%t3 = select i1 %t1, i32 %t2, i32 %x
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ret i32 %t3
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}
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define i32 @t2(i32 %c, i32 %x) nounwind {
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%t1 = icmp eq i32 %c, 0
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%t2 = and i32 %x, 18
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%t3 = select i1 %t1, i32 %t2, i32 %x
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ret i32 %t3
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}
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define float @t3(float %x, float %y) nounwind {
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%t1 = fcmp ogt float %x, %y
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%t2 = select i1 %t1, float %x, float 1.0
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%t3 = fadd fast float %t2, 1.0
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ret float %t3
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; CHECK-LABEL: @t3(
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; CHECK: fadd fast
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; CHECK: select
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}
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