From dd86ce3d570a77f90d6d2ccb6dde8d1fef35e094 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Tue, 4 Dec 2007 23:57:55 +0000 Subject: [PATCH] Remove a unsafe optimization. This fixes 401.bzip2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44587 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/VirtRegMap.cpp | 8 -------- 1 file changed, 8 deletions(-) diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp index a375a7b4985..58fc40b2174 100644 --- a/lib/CodeGen/VirtRegMap.cpp +++ b/lib/CodeGen/VirtRegMap.cpp @@ -1040,14 +1040,6 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) { // Check to see if this stack slot is available. unsigned PhysReg = Spills.getSpillSlotOrReMatPhysReg(SSorRMId); - if (!PhysReg && DoReMat) { - // This use is rematerializable. But perhaps the value is available in - // a register if the definition is not deleted. If so, check if we can - // reuse the value. - ReuseSlot = VRM.getStackSlot(VirtReg); - if (ReuseSlot != VirtRegMap::NO_STACK_SLOT) - PhysReg = Spills.getSpillSlotOrReMatPhysReg(ReuseSlot); - } // If this is a sub-register use, make sure the reuse register is in the // right register class. For example, for x86 not all of the 32-bit -- 2.34.1