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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-06-17 23:15:00 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-06-17 23:15:00 +0000 |
| commit | 157e6a79a1f4ccd9863a4110c09d9b7e5f38f127 (patch) | |
| tree | 4e37d06bba121f4589dae4cbd46f4d32a5690e84 /llvm/lib/Target/X86/X86RegisterInfo.cpp | |
| parent | 232431c389c7b1b69cd971b1945a93815c66536a (diff) | |
| download | bcm5719-llvm-157e6a79a1f4ccd9863a4110c09d9b7e5f38f127.tar.gz bcm5719-llvm-157e6a79a1f4ccd9863a4110c09d9b7e5f38f127.zip | |
SI, DI, BP, and SP don't have 8-bit sub-registers in x86 mode.
llvm-svn: 133308
Diffstat (limited to 'llvm/lib/Target/X86/X86RegisterInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86RegisterInfo.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86RegisterInfo.cpp b/llvm/lib/Target/X86/X86RegisterInfo.cpp index 1ad6203af2f..9b013a323d8 100644 --- a/llvm/lib/Target/X86/X86RegisterInfo.cpp +++ b/llvm/lib/Target/X86/X86RegisterInfo.cpp @@ -517,13 +517,20 @@ BitVector X86RegisterInfo::getReservedRegs(const MachineFunction &MF) const { // Reserve the registers that only exist in 64-bit mode. if (!Is64Bit) { + // These 8-bit registers are part of the x86-64 extension even though their + // super-registers are old 32-bits. + Reserved.set(X86::SIL); + Reserved.set(X86::DIL); + Reserved.set(X86::BPL); + Reserved.set(X86::SPL); + for (unsigned n = 0; n != 8; ++n) { + // R8, R9, ... const unsigned GPR64[] = { X86::R8, X86::R9, X86::R10, X86::R11, X86::R12, X86::R13, X86::R14, X86::R15 }; - for (const unsigned *AI = getOverlaps(GPR64[n]); unsigned Reg = *AI; - ++AI) + for (const unsigned *AI = getOverlaps(GPR64[n]); unsigned Reg = *AI; ++AI) Reserved.set(Reg); // XMM8, XMM9, ... |
