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https://github.com/c64scene-ar/llvm-6502.git
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6dc91253ab
is "X != 0 -> X" when X is a boolean. This occurs a lot because of the way llvm-gcc converts gcc's conditional expressions. Add this, and a few other similar transforms for completeness. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123372 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
427 B
LLVM
30 lines
427 B
LLVM
; RUN: opt < %s -instsimplify -S | FileCheck %s
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define i1 @add(i1 %x) {
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; CHECK: @add
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%z = add i1 %x, %x
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ret i1 %z
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; CHECK: ret i1 false
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}
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define i1 @sub(i1 %x) {
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; CHECK: @sub
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%z = sub i1 false, %x
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ret i1 %z
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; CHECK: ret i1 %x
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}
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define i1 @mul(i1 %x) {
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; CHECK: @mul
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%z = mul i1 %x, %x
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ret i1 %z
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; CHECK: ret i1 %x
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}
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define i1 @ne(i1 %x) {
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; CHECK: @ne
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%z = icmp ne i1 %x, 0
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ret i1 %z
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; CHECK: ret i1 %x
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}
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