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Recommit modified r167540.

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Improve ARM build attribute emission for architectures types.
This also changes the default architecture emitted for a generic CPU to "v7".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167574 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Amara Emerson 2012-11-08 09:51:45 +00:00
parent be02a90de1
commit 214fd3d244
2 changed files with 21 additions and 6 deletions
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23
lib/Target/ARM/ARMAsmPrinter.cpp
View File

@ -749,13 +749,28 @@ void ARMAsmPrinter::emitAttributes() {
AttrEmitter->EmitAttribute(ARMBuildAttrs::THUMB_ISA_use,
ARMBuildAttrs::Allowed);
} else if (CPUString == "generic") {
// FIXME: Why these defaults?
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v4T);
// For a generic CPU, we assume a standard v7a architecture in Subtarget.
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::Allowed);
}
ARMBuildAttrs::AllowThumb32);
} else if (Subtarget->hasV7Ops()) {
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v7);
AttrEmitter->EmitAttribute(ARMBuildAttrs::THUMB_ISA_use,
ARMBuildAttrs::AllowThumb32);
} else if (Subtarget->hasV6T2Ops())
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v6T2);
else if (Subtarget->hasV6Ops())
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v6);
else if (Subtarget->hasV5TEOps())
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v5TE);
else if (Subtarget->hasV5TOps())
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v5T);
else if (Subtarget->hasV4TOps())
AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v4T);
if (Subtarget->hasNEON() && emitFPU) {
/* NEON is not exactly a VFP architecture, but GAS emit one of

4
test/CodeGen/ARM/2010-10-19-mc-elf-objheader.ll
View File

@ -13,12 +13,12 @@
; BASIC-NEXT: 0x00000000
; BASIC-NEXT: 0x00000000
; BASIC-NEXT: 0x0000003c
; BASIC-NEXT: 0x00000020
; BASIC-NEXT: 0x00000022
; BASIC-NEXT: 0x00000000
; BASIC-NEXT: 0x00000000
; BASIC-NEXT: 0x00000001
; BASIC-NEXT: 0x00000000
; BASIC-NEXT: '411f0000 00616561 62690001 15000000 06020801 09011401 15011703 18011901'
; BASIC-NEXT: '41210000 00616561 62690001 17000000 060a0741 08010902 14011501 17031801 1901'
; CORTEXA8: .ARM.attributes
; CORTEXA8-NEXT: 0x70000003