diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2008-08-17 19:22:34 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-08-17 19:22:34 +0000 |
| commit | 0ac3fc2a61f77af74ccde3dcd437d0f72b736b8f (patch) | |
| tree | 66b37f69e4ff96fd29759517aab3a3874c1caa43 /lib/Target/X86/X86ISelDAGToDAG.cpp | |
| parent | 8715367182244e784b9f5688baf1ed607768e687 (diff) | |
| download | llvm-0ac3fc2a61f77af74ccde3dcd437d0f72b736b8f.tar.gz llvm-0ac3fc2a61f77af74ccde3dcd437d0f72b736b8f.tar.bz2 llvm-0ac3fc2a61f77af74ccde3dcd437d0f72b736b8f.tar.xz | |
Fix a (u)comiss intrinsic lowering bug. It was using anyext which can return junk in higher bits. Patch by Nate Begeman.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54903 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86ISelDAGToDAG.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelDAGToDAG.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp index b76d3e23cf..2bd875e92e 100644 --- a/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -1515,6 +1515,8 @@ SDNode *X86DAGToDAGISel::Select(SDValue N) { SDValue N0 = Node->getOperand(0); // Get the subregsiter index for the type to extend. MVT N0VT = N0.getValueType(); + // FIXME: In x86-32, 8-bit value may be in AH, etc. which don't have + // super-registers. unsigned Idx = (N0VT == MVT::i32) ? X86::SUBREG_32BIT : (N0VT == MVT::i16) ? X86::SUBREG_16BIT : (Subtarget->is64Bit()) ? X86::SUBREG_8BIT : 0; |