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[ARM] Add support for armv7e-m to the .arch directive

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This will allow compilation of assembly files targeting armv7e-m without having
to specify the Tag_CPU_arch attribute as a workaround.

Differential revision: https://reviews.llvm.org/D40370

Patch by Ian Tessier!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@319303 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Oliver Stannard 2017-11-29 10:12:15 +00:00
parent ef36801a14
commit 3aae870071
4 changed files with 70 additions and 0 deletions
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1
lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
View File

@ -847,6 +847,7 @@ void ARMTargetELFStreamer::emitArchDefaultAttributes() {
setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
break;
case ARM::ArchKind::ARMV7EM:
case ARM::ArchKind::ARMV7M:
setAttributeItem(CPU_arch_profile, MicroControllerProfile, false);
setAttributeItem(THUMB_ISA_use, AllowThumb32, false);

3
test/CodeGen/ARM/build-attributes.ll
View File

@ -191,6 +191,9 @@
; ARMv7r
; RUN: llc < %s -mtriple=armv7r-none-linux-gnueabi -mcpu=cortex-r5 | FileCheck %s --check-prefix=NO-STRICT-ALIGN
; RUN: llc < %s -mtriple=armv7r-none-linux-gnueabi -mcpu=cortex-r5 -mattr=+strict-align | FileCheck %s --check-prefix=STRICT-ALIGN
; ARMv7em
; RUN: llc < %s -mtriple=thumbv7em-none-linux-gnueabi -mcpu=cortex-m4 | FileCheck %s --check-prefix=NO-STRICT-ALIGN
; RUN: llc < %s -mtriple=thumbv7em-none-linux-gnueabi -mcpu=cortex-m4 -mattr=+strict-align | FileCheck %s --check-prefix=STRICT-ALIGN
; ARMv7m
; RUN: llc < %s -mtriple=thumbv7m-none-linux-gnueabi -mcpu=cortex-m3 | FileCheck %s --check-prefix=NO-STRICT-ALIGN
; RUN: llc < %s -mtriple=thumbv7m-none-linux-gnueabi -mcpu=cortex-m3 -mattr=+strict-align | FileCheck %s --check-prefix=STRICT-ALIGN

33
test/MC/ARM/directive-arch-armv7e-m.s Normal file
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@ -0,0 +1,33 @@
@ Test the .arch directive for armv7e-m
@ This test case will check the default .ARM.attributes value for the
@ armv7e-m architecture.
@ RUN: llvm-mc -triple arm-eabi -filetype asm %s \
@ RUN: | FileCheck %s -check-prefix CHECK-ASM
@ RUN: llvm-mc -triple arm-eabi -filetype obj %s \
@ RUN: | llvm-readobj -arm-attributes | FileCheck %s -check-prefix CHECK-ATTR
.syntax unified
.arch armv7e-m
@ CHECK-ASM: .arch armv7e-m
@ CHECK-ATTR: FileAttributes {
@ CHECK-ATTR: Attribute {
@ CHECK-ATTR: TagName: CPU_name
@ CHECK-ATTR: Value: 7E-M
@ CHECK-ATTR: }
@ CHECK-ATTR: Attribute {
@ CHECK-ATTR: TagName: CPU_arch
@ CHECK-ATTR: Description: ARM v7
@ CHECK-ATTR: }
@ CHECK-ATTR: Attribute {
@ CHECK-ATTR: TagName: CPU_arch_profile
@ CHECK-ATTR: Description: Microcontroller
@ CHECK-ATTR: }
@ CHECK-ATTR: Attribute {
@ CHECK-ATTR: TagName: THUMB_ISA_use
@ CHECK-ATTR: Description: Thumb-2
@ CHECK-ATTR: }
@ CHECK-ATTR: }

33
test/MC/ARM/directive-arch-armv7em.s Normal file
View File

@ -0,0 +1,33 @@
@ Test the .arch directive for armv7e-m
@ This test case will check the default .ARM.attributes value for the
@ armv7e-m architecture when using the armv7em alias.
@ RUN: llvm-mc -triple arm-eabi -filetype asm %s \
@ RUN: | FileCheck %s -check-prefix CHECK-ASM
@ RUN: llvm-mc -triple arm-eabi -filetype obj %s \
@ RUN: | llvm-readobj -arm-attributes | FileCheck %s -check-prefix CHECK-ATTR
.syntax unified
.arch armv7em
@ CHECK-ASM: .arch armv7e-m
@ CHECK-ATTR: FileAttributes {
@ CHECK-ATTR: Attribute {
@ CHECK-ATTR: TagName: CPU_name
@ CHECK-ATTR: Value: 7E-M
@ CHECK-ATTR: }
@ CHECK-ATTR: Attribute {
@ CHECK-ATTR: TagName: CPU_arch
@ CHECK-ATTR: Description: ARM v7
@ CHECK-ATTR: }
@ CHECK-ATTR: Attribute {
@ CHECK-ATTR: TagName: CPU_arch_profile
@ CHECK-ATTR: Description: Microcontroller
@ CHECK-ATTR: }
@ CHECK-ATTR: Attribute {
@ CHECK-ATTR: TagName: THUMB_ISA_use
@ CHECK-ATTR: Description: Thumb-2
@ CHECK-ATTR: }
@ CHECK-ATTR: }