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https://github.com/c64scene-ar/llvm-6502.git
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takes care of all permutations of this pattern. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60290 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
817 B
LLVM
37 lines
817 B
LLVM
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {and i32 %y, %x} | count 2
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {and i32 %x, %y} | count 2
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep {xor}
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep {or}
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define i32 @func1(i32 %x, i32 %y) nounwind {
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entry:
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%n = xor i32 %y, -1
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%o = or i32 %n, %x
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%a = and i32 %o, %y
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ret i32 %a
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}
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define i32 @func2(i32 %x, i32 %y) nounwind {
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entry:
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%n = xor i32 %y, -1
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%o = or i32 %x, %n
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%a = and i32 %o, %y
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ret i32 %a
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}
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define i32 @func3(i32 %x, i32 %y) nounwind {
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entry:
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%n = xor i32 %y, -1
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%o = or i32 %n, %x
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%a = and i32 %y, %o
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ret i32 %a
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}
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define i32 @func4(i32 %x, i32 %y) nounwind {
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entry:
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%n = xor i32 %y, -1
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%o = or i32 %x, %n
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%a = and i32 %y, %o
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ret i32 %a
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}
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