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author | Bob Wilson <bob.wilson@apple.com> | 2009-04-09 17:16:43 +0000 |
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committer | Bob Wilson <bob.wilson@apple.com> | 2009-04-09 17:16:43 +0000 |
commit | d9df5017040489303acb57bdd8697ef0f8bafc08 (patch) | |
tree | 894d9bc70b3f7019ebfc3c0950f9133059a50638 /lib/Target/TargetInstrInfo.cpp | |
parent | 37831d0a1202ab105b495762cb6cce7b6eb2438c (diff) | |
download | llvm-d9df5017040489303acb57bdd8697ef0f8bafc08.tar.gz llvm-d9df5017040489303acb57bdd8697ef0f8bafc08.tar.bz2 llvm-d9df5017040489303acb57bdd8697ef0f8bafc08.tar.xz |
Fix pr3954. The register scavenger asserts for inline assembly with
register destinations that are tied to source operands. The
TargetInstrDescr::findTiedToSrcOperand method silently fails for inline
assembly. The existing MachineInstr::isRegReDefinedByTwoAddr was very
close to doing what is needed, so this revision makes a few changes to
that method and also renames it to isRegTiedToUseOperand (for consistency
with the very similar isRegTiedToDefOperand and because it handles both
two-address instructions and inline assembly with tied registers).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68714 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/TargetInstrInfo.cpp')
-rw-r--r-- | lib/Target/TargetInstrInfo.cpp | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/lib/Target/TargetInstrInfo.cpp b/lib/Target/TargetInstrInfo.cpp index 10a5cdb624..1bdeef4009 100644 --- a/lib/Target/TargetInstrInfo.cpp +++ b/lib/Target/TargetInstrInfo.cpp @@ -16,19 +16,6 @@ #include "llvm/DerivedTypes.h" using namespace llvm; -/// findTiedToSrcOperand - Returns the operand that is tied to the specified -/// dest operand. Returns -1 if there isn't one. -int TargetInstrDesc::findTiedToSrcOperand(unsigned OpNum) const { - for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { - if (i == OpNum) - continue; - if (getOperandConstraint(i, TOI::TIED_TO) == (int)OpNum) - return i; - } - return -1; -} - - TargetInstrInfo::TargetInstrInfo(const TargetInstrDesc* Desc, unsigned numOpcodes) : Descriptors(Desc), NumOpcodes(numOpcodes) { |