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| author | Juergen Ributzka <juergen@apple.com> | 2014-02-13 04:19:26 +0000 |
|---|---|---|
| committer | Juergen Ributzka <juergen@apple.com> | 2014-02-13 04:19:26 +0000 |
| commit | 525637575cedf7d760e64af6ab0deaf846ca3d11 (patch) | |
| tree | 7f03f99827b77dc84e7f819fb12dd8a1dd89b36e /test/CodeGen | |
| parent | f79b906492f1be5e3846cebd34316431991d9762 (diff) | |
| download | llvm-525637575cedf7d760e64af6ab0deaf846ca3d11.tar.gz llvm-525637575cedf7d760e64af6ab0deaf846ca3d11.tar.bz2 llvm-525637575cedf7d760e64af6ab0deaf846ca3d11.tar.xz | |
[DAG] Fix the recognition of opaque constants in the SelectionDAGBuilder.
This fix checks the original LLVM IR node to identify opaque constants by
looking for the bitcast-constant pattern. Originally we looked at the generated
SDNode, but this might lead to incorrect results. The SDNode could have been
generated by an constant expression that was folded to a constant.
This fixes <rdar://problem/16050719>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201291 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/opaque-constant-asm.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/CodeGen/X86/opaque-constant-asm.ll b/test/CodeGen/X86/opaque-constant-asm.ll new file mode 100644 index 0000000000..ab3d4e8b16 --- /dev/null +++ b/test/CodeGen/X86/opaque-constant-asm.ll @@ -0,0 +1,13 @@ +; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s +; This tests makes sure that we not mistake the bitcast inside the asm statement +; as an opaque constant. If we do, then the compilation will simply fail. + +%struct2 = type <{ i32, i32, i32, i32 }> +%union.anon = type { [2 x i64], [4 x i32] } +%struct1 = type { i32, %union.anon } + +define void @test() { +; CHECK: #ASM $16 + call void asm sideeffect "#ASM $0", "n"(i32 ptrtoint (i32* getelementptr inbounds (%struct2* bitcast (%union.anon* getelementptr inbounds (%struct1* null, i32 0, i32 1) to %struct2*), i32 0, i32 2) to i32)) + ret void +} |