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f3d4646377
(x & y) | (x ^ y) -> x | y (x & y) + (x ^ y) -> x | y Patch by Manman Ren. rdar://10770603 llvm-svn: 155674
25 lines
510 B
LLVM
25 lines
510 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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; rdar://10770603
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; (x & y) | (x ^ y) -> x | y
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define i64 @or(i64 %x, i64 %y) nounwind uwtable readnone ssp {
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%1 = and i64 %y, %x
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%2 = xor i64 %y, %x
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%3 = add i64 %1, %2
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ret i64 %3
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; CHECK: @or
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; CHECK: or i64
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; CHECK-NEXT: ret
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}
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; (x & y) + (x ^ y) -> x | y
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define i64 @or2(i64 %x, i64 %y) nounwind uwtable readnone ssp {
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%1 = and i64 %y, %x
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%2 = xor i64 %y, %x
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%3 = or i64 %1, %2
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ret i64 %3
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; CHECK: @or2
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; CHECK: or i64
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; CHECK-NEXT: ret
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}
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