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[mips] Do not emit '.module [no]oddspreg' unless we really need to.

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We now emit this directive when we need to contradict the default value (e.g.
-mno-odd-spreg is given) or an option changed the default value (e.g. -mfpxx
is given).

This restores support for the currently available head of binutils. However,
at this point binutils 2.24 is still not sufficient since it does not support
'.module fp=...'.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213511 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Sanders 2014-07-21 10:45:47 +00:00
parent 80a15c2ff3
commit 8ecdc6d34f
2 changed files with 16 additions and 7 deletions
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11
lib/Target/Mips/MipsAsmPrinter.cpp
View File

@ -710,9 +710,14 @@ void MipsAsmPrinter::EmitStartOfAsmFile(Module &M) {
getTargetStreamer().updateABIInfo(*Subtarget);
getTargetStreamer().emitDirectiveModuleFP();
if (Subtarget->isABI_O32())
getTargetStreamer().emitDirectiveModuleOddSPReg(Subtarget->useOddSPReg(),
Subtarget->isABI_O32());
// If we are targeting O32 then we must emit a '.module [no]oddspreg' ...
if (Subtarget->isABI_O32()) {
// ... but don't emit it unless we are contradicting the default or an
// option has changed the default (i.e. FPXX).
if (!Subtarget->useOddSPReg() || Subtarget->isABI_FPXX())
getTargetStreamer().emitDirectiveModuleOddSPReg(Subtarget->useOddSPReg(),
Subtarget->isABI_O32());
}
}
void MipsAsmPrinter::EmitJal(MCSymbol *Symbol) {

12
test/CodeGen/Mips/no-odd-spreg.ll
View File

@ -1,10 +1,14 @@
; RUN: llc -march=mipsel -mcpu=mips32 < %s | FileCheck %s -check-prefix=ALL -check-prefix=ODDSPREG
; RUN: llc -march=mipsel -mcpu=mips32 < %s | FileCheck %s -check-prefix=ALL -check-prefix=ODDSPREG -check-prefix=ODDSPREG-NO-EMIT
; RUN: llc -march=mipsel -mcpu=mips32 -mattr=+nooddspreg < %s | FileCheck %s -check-prefix=ALL -check-prefix=NOODDSPREG
; RUN: llc -march=mipsel -mcpu=mips32r6 -mattr=fp64 < %s | FileCheck %s -check-prefix=ALL -check-prefix=ODDSPREG
; RUN: llc -march=mipsel -mcpu=mips32r6 -mattr=fp64 < %s | FileCheck %s -check-prefix=ALL -check-prefix=ODDSPREG -check-prefix=ODDSPREG-NO-EMIT
; RUN: llc -march=mipsel -mcpu=mips32r6 -mattr=fp64,+nooddspreg < %s | FileCheck %s -check-prefix=ALL -check-prefix=NOODDSPREG
; RUN: llc -march=mipsel -mcpu=mips32r6 -mattr=fpxx,-nooddspreg < %s | FileCheck %s -check-prefix=ALL -check-prefix=ODDSPREG -check-prefix=ODDSPREG-EMIT
; ODDSPREG: .module oddspreg
; NOODDSPREG: .module nooddspreg
; We don't emit a directive unless we need to. This is to support versions of
; GAS which do not support the directive.
; ODDSPREG-EMIT: .module oddspreg
; ODDSPREG-NO-EMIT-NOT: .module oddspreg
; NOODDSPREG: .module nooddspreg
define float @two_floats(float %a) {
entry: