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Print PPC ZERO as 0 (not r0) even on Darwin

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It seems that the Darwin PPC assembler requires r0 to be written as 0 when it
means 0 (at least in lwarx/stwcx.). Fixes PR15605.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178142 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2013-03-27 13:20:52 +00:00
parent fe37e6279e
commit 32e12df253
2 changed files with 5 additions and 5 deletions
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4
lib/Target/PowerPC/PPCRegisterInfo.td
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@ -87,8 +87,8 @@ foreach Index = 0-31 in {
}
// The reprsentation of r0 when treated as the constant 0.
def ZERO : GPR<0, "r0">;
def ZERO8 : GP8<ZERO, "r0">;
def ZERO : GPR<0, "0">;
def ZERO8 : GP8<ZERO, "0">;
// Representations of the frame pointer used by ISD::FRAMEADDR.
def FP : GPR<0 /* arbitrary */, "**FRAME POINTER**">;

6
test/CodeGen/PowerPC/atomic-1.ll
View File

@ -1,10 +1,10 @@
; RUN: llc < %s -march=ppc32 | FileCheck %s
; RUN: llc < %s -mtriple=powerpc-apple-darwin -march=ppc32 | FileCheck %s
define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind {
; CHECK: exchange_and_add:
; CHECK: lwarx
; CHECK: lwarx {{r[0-9]+}}, 0, {{r[0-9]+}}
%tmp = atomicrmw add i32* %mem, i32 %val monotonic
; CHECK: stwcx.
; CHECK: stwcx. {{r[0-9]+}}, 0, {{r[0-9]+}}
ret i32 %tmp
}