From d1bfc301986c5e3203ec57cba4122342f7dca108 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Tue, 15 Nov 2011 08:20:43 +0000 Subject: [PATCH] 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 --- lib/CodeGen/ExecutionDepsFix.cpp | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/lib/CodeGen/ExecutionDepsFix.cpp b/lib/CodeGen/ExecutionDepsFix.cpp index 050edce2ec8..16a8f921b3d 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. -- 2.34.1