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[AIX] Use .space instead of .zero in assembly

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Summary:
The AIX system assembler does not understand .zero, so we should prefer
emitting .space.

Subscribers: nemanjai, hiraditya, kbarton, MaskRay, jsji, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68815

llvm-svn: 374564
This commit is contained in:
David Tenty 2019-10-11 15:07:28 +00:00
parent 2a86ec012a
commit 4669a0d818
2 changed files with 18 additions and 0 deletions
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1
lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
View File

@ -86,4 +86,5 @@ void PPCXCOFFMCAsmInfo::anchor() {}
PPCXCOFFMCAsmInfo::PPCXCOFFMCAsmInfo(bool Is64Bit, const Triple &T) {
assert(!IsLittleEndian && "Little-endian XCOFF not supported.");
CodePointerSize = CalleeSaveStackSlotSize = Is64Bit ? 8 : 4;
ZeroDirective = "\t.space\t";
}

17
test/CodeGen/PowerPC/aix-space.ll Normal file
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@ -0,0 +1,17 @@
; RUN: llc -verify-machineinstrs -O0 -mcpu=pwr7 -mtriple powerpc-ibm-aix-xcoff < %s | FileCheck %s
@a = common global double 0.000000e+00, align 8
; Get some constants into the constant pool that need spacing for alignment
define void @e() {
entry:
%0 = load double, double* @a, align 8
%mul = fmul double 1.500000e+00, %0
store double %mul, double* @a, align 8
%mul1 = fmul double 0x3F9C71C71C71C71C, %0
store double %mul1, double* @a, align 8
ret void
}
; CHECK: .space 4
; CHECK-NOT: .zero