diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-04 23:54:54 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-04 23:54:54 +0000 |
| commit | 4f5de9bb406f93e9a20c2ce19b00f5fc2683cc9c (patch) | |
| tree | 790c317466c5330cd488a135cfea410361525ae7 | |
| parent | 61396aebee310b96b0c2a9cb629665c2f23d45f5 (diff) | |
Fix X86RegisterInfo::getMatchingSuperRegClass for sub_8bit_hi.
It is OK for B to be any GR8_ABCD_H superclass, the returned register class
doesn't have to map surjectively onto B.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130892 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86RegisterInfo.cpp | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp index 37fb0fe569..6f3cdb503e 100644 --- a/lib/Target/X86/X86RegisterInfo.cpp +++ b/lib/Target/X86/X86RegisterInfo.cpp @@ -229,19 +229,14 @@ X86RegisterInfo::getMatchingSuperRegClass(const TargetRegisterClass *A, } break; case X86::sub_8bit_hi: - if (B == &X86::GR8_ABCD_HRegClass) { - if (A == &X86::GR64RegClass || A == &X86::GR64_ABCDRegClass || - A == &X86::GR64_NOREXRegClass || - A == &X86::GR64_NOSPRegClass || - A == &X86::GR64_NOREX_NOSPRegClass) - return &X86::GR64_ABCDRegClass; - else if (A == &X86::GR32RegClass || A == &X86::GR32_ABCDRegClass || - A == &X86::GR32_NOREXRegClass || A == &X86::GR32_NOSPRegClass) - return &X86::GR32_ABCDRegClass; - else if (A == &X86::GR16RegClass || A == &X86::GR16_ABCDRegClass || - A == &X86::GR16_NOREXRegClass) - return &X86::GR16_ABCDRegClass; - } + if (B == &X86::GR8_ABCD_HRegClass || + B->hasSubClass(&X86::GR8_ABCD_HRegClass)) + switch (A->getSize()) { + case 2: return getCommonSubClass(A, &X86::GR16_ABCDRegClass); + case 4: return getCommonSubClass(A, &X86::GR32_ABCDRegClass); + case 8: return getCommonSubClass(A, &X86::GR64_ABCDRegClass); + default: return 0; + } break; case X86::sub_16bit: if (B == &X86::GR16RegClass) { |