diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86RegisterInfo.cpp | 9 | ||||
| -rw-r--r-- | lib/Target/X86/X86RegisterInfo.td | 10 |
2 files changed, 17 insertions, 2 deletions
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp index fc1b8cf..ebd0d05 100644 --- a/lib/Target/X86/X86RegisterInfo.cpp +++ b/lib/Target/X86/X86RegisterInfo.cpp @@ -301,9 +301,16 @@ X86RegisterInfo::getMatchingSuperRegClass(const TargetRegisterClass *A, A == &X86::GR64_NOREX_NOSPRegClass) return &X86::GR64_ABCDRegClass; } else if (B == &X86::GR32_NOREXRegClass) { + if (A == &X86::GR64RegClass || A == &X86::GR64_NOREXRegClass) + return &X86::GR64_NOREXRegClass; + else if (A == &X86::GR64_NOSPRegClass || A == &X86::GR64_NOREX_NOSPRegClass) + return &X86::GR64_NOREX_NOSPRegClass; + else if (A == &X86::GR64_ABCDRegClass) + return &X86::GR64_ABCDRegClass; + } else if (B == &X86::GR32_NOREX_NOSPRegClass) { if (A == &X86::GR64RegClass || A == &X86::GR64_NOREXRegClass || A == &X86::GR64_NOSPRegClass || A == &X86::GR64_NOREX_NOSPRegClass) - return &X86::GR64_NOREXRegClass; + return &X86::GR64_NOREX_NOSPRegClass; else if (A == &X86::GR64_ABCDRegClass) return &X86::GR64_ABCDRegClass; } diff --git a/lib/Target/X86/X86RegisterInfo.td b/lib/Target/X86/X86RegisterInfo.td index d2dce1f..a383d3d 100644 --- a/lib/Target/X86/X86RegisterInfo.td +++ b/lib/Target/X86/X86RegisterInfo.td @@ -601,12 +601,20 @@ def GR64_NOSP : RegisterClass<"X86", [i64], 64, (GR32_NOSP sub_32bit)]; } +// GR32_NOREX_NOSP - GR32 registers which do not require a REX prefix except +// ESP. +def GR32_NOREX_NOSP : RegisterClass<"X86", [i32], 32, + [EAX, ECX, EDX, ESI, EDI, EBX, EBP]> { + let SubRegClasses = [(GR8_NOREX sub_8bit, sub_8bit_hi), + (GR16_NOREX sub_16bit)]; +} + // GR64_NOREX_NOSP - GR64_NOREX registers except RSP. def GR64_NOREX_NOSP : RegisterClass<"X86", [i64], 64, [RAX, RCX, RDX, RSI, RDI, RBX, RBP]> { let SubRegClasses = [(GR8_NOREX sub_8bit, sub_8bit_hi), (GR16_NOREX sub_16bit), - (GR32_NOREX sub_32bit)]; + (GR32_NOREX_NOSP sub_32bit)]; } // A class to support the 'A' assembler constraint: EAX then EDX. |