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Revert "Don't check liveness of unallocatable registers."

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The ARM target depends on CPSR liveness being tracked after register
allocation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136548 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2011-07-30 00:57:25 +00:00
parent 2e1513d9cd
commit 4af0f5fecb
3 changed files with 5 additions and 12 deletions
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4
lib/CodeGen/RegisterScavenging.cpp
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@@ -157,7 +157,7 @@ void RegScavenger::forward() {
if (!MO.isReg())
continue;
unsigned Reg = MO.getReg();
if (!Reg || isReserved(Reg) || !TRI->isInAllocatableClass(Reg))
if (!Reg || isReserved(Reg))
continue;
if (MO.isUse()) {
@@ -184,7 +184,7 @@ void RegScavenger::forward() {
if (!MO.isReg())
continue;
unsigned Reg = MO.getReg();
if (!Reg || isReserved(Reg) || !TRI->isInAllocatableClass(Reg))
if (!Reg || isReserved(Reg))
continue;
if (MO.isUse()) {
if (MO.isUndef())