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llvm-project/llvm/test/CodeGen/AArch64/neon-or-combine.ll

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AArch64/ARM64: move ARM64 into AArch64's place This commit starts with a "git mv ARM64 AArch64" and continues out from there, renaming the C++ classes, intrinsics, and other target-local objects for consistency. "ARM64" test directories are also moved, and tests that began their life in ARM64 use an arm64 triple, those from AArch64 use an aarch64 triple. Both should be equivalent though. This finishes the AArch64 merge, and everyone should feel free to continue committing as normal now. llvm-svn: 209577
2014-05-24 20:50:23 +08:00
; RUN: llc < %s -mtriple=aarch64-none-linux-gnu -mattr=+neon | FileCheck %s
[AArch64] Fix assertion failure caused by an invalid comparison between APInt values. APInt only knows how to compare values with the same BitWidth and asserts in all other cases. With this fix, function PerformORCombine does not use the APInt equality operator if the APInt values returned by 'isConstantSplat' differ in BitWidth. In that case they are different and no comparison is needed. llvm-svn: 199119
2014-01-14 00:51:00 +08:00
; Check that the DAGCombiner does not crash with an assertion failure
; when performing a target specific combine to simplify a 'or' dag node
; according to the following rule:
; (or (and B, A), (and C, ~A)) => (VBSL A, B, C)
; The assertion failure was caused by an invalid comparison between APInt
; values with different 'BitWidth'.
define <8 x i8> @test1(<8 x i8> %a, <8 x i8> %b) {
%tmp1 = and <8 x i8> %a, < i8 -1, i8 -1, i8 0, i8 0, i8 -1, i8 -1, i8 0, i8 0 >
%tmp2 = and <8 x i8> %b, < i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0 >
%tmp3 = or <8 x i8> %tmp1, %tmp2
ret <8 x i8> %tmp3
}
; CHECK-LABEL: test1
; CHECK: ret
define <16 x i8> @test2(<16 x i8> %a, <16 x i8> %b) {
%tmp1 = and <16 x i8> %a, < i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1 >
%tmp2 = and <16 x i8> %b, < i8 -1, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0 >
%tmp3 = or <16 x i8> %tmp1, %tmp2
ret <16 x i8> %tmp3
}
; CHECK-LABEL: test2
; CHECK: ret