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| author | Nikita Popov <npopov@redhat.com> | 2024-05-21 14:56:22 +0200 |
|---|---|---|
| committer | Nikita Popov <npopov@redhat.com> | 2024-05-21 15:00:01 +0200 |
| commit | f78b1a40864470f7eb30dfda44a6ea8e845346a5 (patch) | |
| tree | c57f5195c9ee84f67821e5575fbc960525b2d810 | |
| parent | 558f3ea4aef718f953d3f38a45363d8a91988292 (diff) | |
| download | llvm-f78b1a40864470f7eb30dfda44a6ea8e845346a5.zip llvm-f78b1a40864470f7eb30dfda44a6ea8e845346a5.tar.gz llvm-f78b1a40864470f7eb30dfda44a6ea8e845346a5.tar.bz2 | |
[InstCombine] Add test for #92887 (NFC)
| -rw-r--r-- | llvm/test/Transforms/InstCombine/vec_shuffle.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/vec_shuffle.ll b/llvm/test/Transforms/InstCombine/vec_shuffle.ll index 919e30f..839279d 100644 --- a/llvm/test/Transforms/InstCombine/vec_shuffle.ll +++ b/llvm/test/Transforms/InstCombine/vec_shuffle.ll @@ -2330,3 +2330,19 @@ define <4 x i16> @blend_elements_from_load(ptr align 8 %_0) { %rv = shufflevector <3 x i16> <i16 0, i16 undef, i16 undef>, <3 x i16> %load, <4 x i32> <i32 0, i32 1, i32 3, i32 5> ret <4 x i16> %rv } + +; FIXME: This is a miscompile. +define i16 @pr92887(<2 x i16> %v) { +; CHECK-LABEL: @pr92887( +; CHECK-NEXT: ret i16 poison +; + %v0 = extractelement <2 x i16> %v, i64 0 + %v0lo = and i16 %v0, 1 + %v1 = extractelement <2 x i16> %v, i64 1 + %v1lo = and i16 %v1, 1 + %ins1 = insertelement <4 x i16> poison, i16 %v0lo, i64 0 + %ins2 = insertelement <4 x i16> %ins1, i16 %v1lo, i64 1 + %shuf = shufflevector <4 x i16> %ins2, <4 x i16> <i16 poison, i16 poison, i16 undef, i16 undef>, <4 x i32> <i32 0, i32 1, i32 6, i32 7> + %extract = extractelement <4 x i16> %shuf, i32 2 + ret i16 %extract +} |