diff options
| -rw-r--r-- | test/Transforms/InstCombine/xor.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/xor.ll b/test/Transforms/InstCombine/xor.ll index 29f0f10fdd..772c480588 100644 --- a/test/Transforms/InstCombine/xor.ll +++ b/test/Transforms/InstCombine/xor.ll @@ -3,6 +3,9 @@ ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'xor ' +%G1 = global uint 0 +%G2 = global uint 0 + implementation bool %test0(bool %A) { @@ -128,3 +131,14 @@ uint %test19(uint %A, uint %B) { %D = xor uint %C, %A ; A terms cancel, D = B ret uint %D } + +void %test20(uint %A, uint %B) { ; The "swap idiom" + %tmp.2 = xor uint %B, %A + %tmp.5 = xor uint %tmp.2, %B + %tmp.8 = xor uint %tmp.5, %tmp.2 + store uint %tmp.8, uint* %G1 ; tmp.8 = B + store uint %tmp.5, uint* %G2 ; tmp.5 = A + ret void +} + + |