diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86InstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrInfo.cpp | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp index bc72f63aeb1..e1e6ff3b1a9 100644 --- a/llvm/lib/Target/X86/X86InstrInfo.cpp +++ b/llvm/lib/Target/X86/X86InstrInfo.cpp @@ -2370,6 +2370,23 @@ MachineInstr* X86InstrInfo::foldMemoryOperandImpl(MachineFunction &MF, // Check switch flag if (NoFusing) return NULL; + if (TM.getSubtarget<X86Subtarget>().shouldBreakSSEDep()) + switch (MI->getOpcode()) { + case X86::CVTSD2SSrr: + case X86::Int_CVTSD2SSrr: + case X86::CVTSS2SDrr: + case X86::Int_CVTSS2SDrr: + case X86::RCPSSr: + case X86::RCPSSr_Int: + case X86::ROUNDSDr_Int: + case X86::ROUNDSSr_Int: + case X86::RSQRTSSr: + case X86::RSQRTSSr_Int: + case X86::SQRTSSr: + case X86::SQRTSSr_Int: + return 0; + } + const MachineFrameInfo *MFI = MF.getFrameInfo(); unsigned Size = MFI->getObjectSize(FrameIndex); unsigned Alignment = MFI->getObjectAlignment(FrameIndex); @@ -2405,6 +2422,23 @@ MachineInstr* X86InstrInfo::foldMemoryOperandImpl(MachineFunction &MF, // Check switch flag if (NoFusing) return NULL; + if (TM.getSubtarget<X86Subtarget>().shouldBreakSSEDep()) + switch (MI->getOpcode()) { + case X86::CVTSD2SSrr: + case X86::Int_CVTSD2SSrr: + case X86::CVTSS2SDrr: + case X86::Int_CVTSS2SDrr: + case X86::RCPSSr: + case X86::RCPSSr_Int: + case X86::ROUNDSDr_Int: + case X86::ROUNDSSr_Int: + case X86::RSQRTSSr: + case X86::RSQRTSSr_Int: + case X86::SQRTSSr: + case X86::SQRTSSr_Int: + return 0; + } + // Determine the alignment of the load. unsigned Alignment = 0; if (LoadMI->hasOneMemOperand()) |
