From e14ef7e6f8becbccf80762eb596f545a972ba6fb Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Tue, 15 Nov 2011 08:20:43 +0000 Subject: Check all overlaps when looking for used registers. A function using any RC alias is enough to enable the ExeDepsFix pass. llvm-svn: 144636 --- llvm/lib/CodeGen/ExecutionDepsFix.cpp | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'llvm/lib/CodeGen/ExecutionDepsFix.cpp') diff --git a/llvm/lib/CodeGen/ExecutionDepsFix.cpp b/llvm/lib/CodeGen/ExecutionDepsFix.cpp index 050edce2ec8..16a8f921b3d 100644 --- a/llvm/lib/CodeGen/ExecutionDepsFix.cpp +++ b/llvm/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. -- cgit v1.2.3