diff options
Diffstat (limited to 'lib/Basic')
| -rw-r--r-- | lib/Basic/TargetInfo.cpp | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/lib/Basic/TargetInfo.cpp b/lib/Basic/TargetInfo.cpp index 7fcf372a36..05db02a9fe 100644 --- a/lib/Basic/TargetInfo.cpp +++ b/lib/Basic/TargetInfo.cpp @@ -287,8 +287,17 @@ bool TargetInfo::validateOutputConstraint(ConstraintInfo &Info) const { Info.setAllowsRegister(); Info.setAllowsMemory(); break; - case ',': // FIXME: Until we handle multiple alternative constraints, - return true; // ignore everything after the first comma. + case ',': // multiple alternative constraint. Pass it. + Name++; + // An output constraint must start with '=' or '+' + if (*Name != '=' && *Name != '+') + return false; + if (*Name == '+') + Info.setIsReadWrite(); + break; + case '?': // Disparage slightly code. + case '!': // Disparage severly. + break; // Pass them. } Name++; @@ -382,8 +391,11 @@ bool TargetInfo::validateInputConstraint(ConstraintInfo *OutputConstraints, Info.setAllowsRegister(); Info.setAllowsMemory(); break; - case ',': // FIXME: Until we handle multiple alternative constraints, - return true; // ignore everything after the first comma. + case ',': // multiple alternative constraint. Ignore comma. + break; + case '?': // Disparage slightly code. + case '!': // Disparage severly. + break; // Pass them. } Name++; |