diff options
| -rw-r--r-- | lib/Target/X86/X86FastISel.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp index 61ca24e2b2..d6cdc3fb64 100644 --- a/lib/Target/X86/X86FastISel.cpp +++ b/lib/Target/X86/X86FastISel.cpp @@ -1002,7 +1002,9 @@ bool X86FastISel::X86SelectTrunc(Instruction *I) { return false; MVT SrcVT = TLI.getValueType(I->getOperand(0)->getType()); MVT DstVT = TLI.getValueType(I->getType()); - if (DstVT != MVT::i8) + + // This code only handles truncation to byte right now. + if (DstVT != MVT::i8 && DstVT != MVT::i1) // All other cases should be handled by the tblgen generated code. return false; if (SrcVT != MVT::i16 && SrcVT != MVT::i32) @@ -1022,7 +1024,7 @@ bool X86FastISel::X86SelectTrunc(Instruction *I) { BuildMI(MBB, DL, TII.get(CopyOpc), CopyReg).addReg(InputReg); // Then issue an extract_subreg. - unsigned ResultReg = FastEmitInst_extractsubreg(DstVT.getSimpleVT(), + unsigned ResultReg = FastEmitInst_extractsubreg(MVT::i8, CopyReg, X86::SUBREG_8BIT); if (!ResultReg) return false; |