diff options
Diffstat (limited to 'test/Transforms/InstCombine/apint-or2.ll')
-rw-r--r-- | test/Transforms/InstCombine/apint-or2.ll | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/apint-or2.ll b/test/Transforms/InstCombine/apint-or2.ll new file mode 100644 index 000000000000..21dc5654ceec --- /dev/null +++ b/test/Transforms/InstCombine/apint-or2.ll @@ -0,0 +1,35 @@ +; This test makes sure that or instructions are properly eliminated. +; This test is for Integer BitWidth > 64 && BitWidth <= 1024. +; +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep or + + +define i777 @test0(i777 %X) { + %Y = or i777 %X, 0 + ret i777 %Y +} + +define i117 @test1(i117 %X) { + %Y = or i117 %X, -1 + ret i117 %Y +} + +define i1023 @test2(i1023 %A) { + ;; A | ~A == -1 + %NotA = xor i1023 -1, %A + %B = or i1023 %A, %NotA + ret i1023 %B +} + +define i399 @test3(i399 %V, i399 %M) { + ;; If we have: ((V + N) & C1) | (V & C2) + ;; .. and C2 = ~C1 and C2 is 0+1+ and (N & C2) == 0 + ;; replace with V+N. + %C1 = xor i399 274877906943, -1 ;; C2 = 274877906943 + %N = and i399 %M, 18446742974197923840 + %A = add i399 %V, %N + %B = and i399 %A, %C1 + %D = and i399 %V, 274877906943 + %R = or i399 %B, %D + ret i399 %R +} |