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Rework some .ARM.attribute work for improved gcc compatibility.

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Unified EmitTextAttribute for both Asm and Obj emission (.cpu only)
Added necessary cortex-A8 related attrs for codegen compat tests.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124995 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jason W Kim
2011-02-07 00:49:53 +00:00
parent c6ee9181a5
commit f009a961ca
4 changed files with 119 additions and 30 deletions
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63
lib/Target/ARM/ARMAsmPrinter.cpp
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@@ -66,6 +66,7 @@ namespace {
public:
virtual void MaybeSwitchVendor(StringRef Vendor) = 0;
virtual void EmitAttribute(unsigned Attribute, unsigned Value) = 0;
virtual void EmitTextAttribute(unsigned Attribute, StringRef String) = 0;
virtual void Finish() = 0;
virtual ~AttributeEmitter() {}
};
@@ -82,6 +83,14 @@ namespace {
Twine(Attribute) + ", " + Twine(Value));
}
void EmitTextAttribute(unsigned Attribute, StringRef String) {
switch (Attribute) {
case ARMBuildAttrs::CPU_name:
Streamer.EmitRawText(StringRef("\t.cpu ") + String);
break;
default: assert(0 && "Unsupported Text attribute in ASM Mode"); break;
}
}
void Finish() { }
};
@@ -115,6 +124,12 @@ namespace {
Contents += Value;
}
void EmitTextAttribute(unsigned Attribute, StringRef String) {
Contents += Attribute;
Contents += String;
Contents += 0;
}
void Finish() {
const size_t ContentsSize = Contents.size();
@@ -449,32 +464,53 @@ void ARMAsmPrinter::emitAttributes() {
AttrEmitter->MaybeSwitchVendor("aeabi");
std::string CPUString = Subtarget->getCPUString();
if (OutStreamer.hasRawTextSupport()) {
if (CPUString != "generic")
OutStreamer.EmitRawText(StringRef("\t.cpu ") + CPUString);
} else {
assert(CPUString == "generic" && "Unsupported .cpu attribute for ELF/.o");
if (CPUString == "cortex-a8" ||
Subtarget->isCortexA8()) {
AttrEmitter->EmitTextAttribute(ARMBuildAttrs::CPU_name, "CORTEX-A8");
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v7);
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch_profile,
ARMBuildAttrs::ApplicationProfile);
AttrEmitter->EmitAttribute(ARMBuildAttrs::ARM_ISA_use,
ARMBuildAttrs::Allowed);
AttrEmitter->EmitAttribute(ARMBuildAttrs::THUMB_ISA_use,
ARMBuildAttrs::AllowThumb32);
// Fixme: figure out when this is emitted.
//AttrEmitter->EmitAttribute(ARMBuildAttrs::WMMX_arch,
// ARMBuildAttrs::AllowWMMXv1);
//
/// ADD additional Else-cases here!
} else if (CPUString == "generic") {
// FIXME: Why these defaults?
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v4T);
AttrEmitter->EmitAttribute(ARMBuildAttrs::ARM_ISA_use, 1);
AttrEmitter->EmitAttribute(ARMBuildAttrs::THUMB_ISA_use, 1);
AttrEmitter->EmitAttribute(ARMBuildAttrs::ARM_ISA_use,
ARMBuildAttrs::Allowed);
AttrEmitter->EmitAttribute(ARMBuildAttrs::THUMB_ISA_use,
ARMBuildAttrs::Allowed);
}
// FIXME: Emit FPU type
if (Subtarget->hasVFP2())
AttrEmitter->EmitAttribute(ARMBuildAttrs::VFP_arch, 2);
AttrEmitter->EmitAttribute(ARMBuildAttrs::VFP_arch,
ARMBuildAttrs::AllowFPv2);
// Signal various FP modes.
if (!UnsafeFPMath) {
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_denormal, 1);
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_exceptions, 1);
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_denormal,
ARMBuildAttrs::Allowed);
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_exceptions,
ARMBuildAttrs::Allowed);
}
if (NoInfsFPMath && NoNaNsFPMath)
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_number_model, 1);
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_number_model,
ARMBuildAttrs::Allowed);
else
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_number_model, 3);
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_FP_number_model,
ARMBuildAttrs::AllowIEE754);
// FIXME: add more flags to ARMBuildAttrs.h
// 8-bytes alignment stuff.
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_align8_needed, 1);
AttrEmitter->EmitAttribute(ARMBuildAttrs::ABI_align8_preserved, 1);
@@ -486,7 +522,8 @@ void ARMAsmPrinter::emitAttributes() {
}
// FIXME: Should we signal R9 usage?
AttrEmitter->EmitAttribute(ARMBuildAttrs::DIV_use, 1);
if (Subtarget->hasDivide())
AttrEmitter->EmitAttribute(ARMBuildAttrs::DIV_use, 1);
AttrEmitter->Finish();
delete AttrEmitter;