mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 00:29:20 +00:00
Fix a bug where we were counting the alias sets as completely used
registers for fast allocation. Fixes rdar://9207598 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129408 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
161b2f45c2
commit
8e98de9979
@ -442,8 +442,6 @@ unsigned RAFast::calcSpillCost(unsigned PhysReg) const {
|
||||
unsigned Cost = 0;
|
||||
for (const unsigned *AS = TRI->getAliasSet(PhysReg);
|
||||
unsigned Alias = *AS; ++AS) {
|
||||
if (UsedInInstr.test(Alias))
|
||||
return spillImpossible;
|
||||
switch (unsigned VirtReg = PhysRegState[Alias]) {
|
||||
case regDisabled:
|
||||
break;
|
||||
|
15
test/CodeGen/ARM/2011-04-12-FastRegAlloc.ll
Normal file
15
test/CodeGen/ARM/2011-04-12-FastRegAlloc.ll
Normal file
@ -0,0 +1,15 @@
|
||||
; RUN: llc < %s -O0 -verify-machineinstrs -regalloc=fast
|
||||
; Previously we'd crash as out of registers on this input by clobbering all of
|
||||
; the aliases.
|
||||
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
|
||||
target triple = "thumbv7-apple-darwin10.0.0"
|
||||
|
||||
define void @_Z8TestCasev() nounwind ssp {
|
||||
entry:
|
||||
%a = alloca float, align 4
|
||||
%tmp = load float* %a, align 4
|
||||
call void asm sideeffect "", "w,~{s0},~{s16}"(float %tmp) nounwind, !srcloc !0
|
||||
ret void
|
||||
}
|
||||
|
||||
!0 = metadata !{i32 109}
|
Loading…
Reference in New Issue
Block a user