diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/apint-and-or-and.ll')
-rw-r--r-- | llvm/test/Transforms/InstCombine/apint-and-or-and.ll | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/llvm/test/Transforms/InstCombine/apint-and-or-and.ll b/llvm/test/Transforms/InstCombine/apint-and-or-and.ll deleted file mode 100644 index 43536d72e9b..00000000000 --- a/llvm/test/Transforms/InstCombine/apint-and-or-and.ll +++ /dev/null @@ -1,50 +0,0 @@ -; If we have an 'and' of the result of an 'or', and one of the 'or' operands -; cannot have contributed any of the resultant bits, delete the or. This -; occurs for very common C/C++ code like this: -; -; struct foo { int A : 16; int B : 16; }; -; void test(struct foo *F, int X, int Y) { -; F->A = X; F->B = Y; -; } -; -; Which corresponds to test1. -; -; This tests arbitrary precision integers. - -; RUN: opt < %s -instcombine -S | not grep "or " -; END. - -define i17 @test1(i17 %X, i17 %Y) { - %A = and i17 %X, 7 - %B = and i17 %Y, 8 - %C = or i17 %A, %B - %D = and i17 %C, 7 ;; This cannot include any bits from %Y! - ret i17 %D -} - -define i49 @test3(i49 %X, i49 %Y) { - %B = shl i49 %Y, 1 - %C = or i49 %X, %B - %D = and i49 %C, 1 ;; This cannot include any bits from %Y! - ret i49 %D -} - -define i67 @test4(i67 %X, i67 %Y) { - %B = lshr i67 %Y, 66 - %C = or i67 %X, %B - %D = and i67 %C, 2 ;; This cannot include any bits from %Y! - ret i67 %D -} - -define i231 @or_test1(i231 %X, i231 %Y) { - %A = and i231 %X, 1 - %B = or i231 %A, 1 ;; This cannot include any bits from X! - ret i231 %B -} - -define i7 @or_test2(i7 %X, i7 %Y) { - %A = shl i7 %X, 6 - %B = or i7 %A, 64 ;; This cannot include any bits from X! - ret i7 %B -} - |