diff options
| -rw-r--r-- | lib/Target/X86/X86RegisterInfo.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp index 5d5dc6a9c7..c043554b32 100644 --- a/lib/Target/X86/X86RegisterInfo.cpp +++ b/lib/Target/X86/X86RegisterInfo.cpp @@ -270,9 +270,14 @@ X86RegisterInfo::getMatchingSuperRegClass(const TargetRegisterClass *A, } break; case X86::sub_32bit: - if (B == &X86::GR32RegClass || B == &X86::GR32_NOSPRegClass) { + if (B == &X86::GR32RegClass) { if (A->getSize() == 8) return A; + } else if (B == &X86::GR32_NOSPRegClass) { + if (A == &X86::GR64RegClass || &X86::GR64_NOSPRegClass) + return &X86::GR64_NOSPRegClass; + if (A->getSize() == 8) + return getCommonSubClass(A, &X86::GR64_NOSPRegClass); } else if (B == &X86::GR32_ABCDRegClass) { if (A == &X86::GR64RegClass || A == &X86::GR64_ABCDRegClass || A == &X86::GR64_NOREXRegClass || |