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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-11-15 08:20:43 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-11-15 08:20:43 +0000 |
| commit | d1bfc301986c5e3203ec57cba4122342f7dca108 (patch) | |
| tree | 22c2682cf37e5933565ab6f476824eddfd74c673 | |
| parent | f4a5084d06438fcd7f91684b6236b66c4c202e16 (diff) | |
Check all overlaps when looking for used registers.
A function using any RC alias is enough to enable the ExeDepsFix pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144636 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/ExecutionDepsFix.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/CodeGen/ExecutionDepsFix.cpp b/lib/CodeGen/ExecutionDepsFix.cpp index 050edce2ec..16a8f921b3 100644 --- a/lib/CodeGen/ExecutionDepsFix.cpp +++ b/lib/CodeGen/ExecutionDepsFix.cpp @@ -650,10 +650,11 @@ bool ExeDepsFix::runOnMachineFunction(MachineFunction &mf) { bool anyregs = false; for (TargetRegisterClass::const_iterator I = RC->begin(), E = RC->end(); I != E; ++I) - if (MF->getRegInfo().isPhysRegUsed(*I)) { - anyregs = true; - break; - } + for (const unsigned *AI = TRI->getOverlaps(*I); *AI; ++AI) + if (MF->getRegInfo().isPhysRegUsed(*AI)) { + anyregs = true; + break; + } if (!anyregs) return false; // Initialize the AliasMap on the first use. |