[llvm] r319303 - [ARM] Add support for armv7e-m to the .arch directive

[Oliver Stannard via llvm-commits]

Author: olista01
Date: Wed Nov 29 02:12:15 2017
New Revision: 319303

URL: http://llvm.org/viewvc/llvm-project?rev=319303&view=rev
Log:
[ARM] Add support for armv7e-m to the .arch directive

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!


Added:
    llvm/trunk/test/MC/ARM/directive-arch-armv7e-m.s
    llvm/trunk/test/MC/ARM/directive-arch-armv7em.s
Modified:
    llvm/trunk/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
    llvm/trunk/test/CodeGen/ARM/build-attributes.ll

Modified: llvm/trunk/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp?rev=319303&r1=319302&r2=319303&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp (original)
+++ llvm/trunk/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp Wed Nov 29 02:12:15 2017
@@ -847,6 +847,7 @@ void ARMTargetELFStreamer::emitArchDefau
     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);

Modified: llvm/trunk/test/CodeGen/ARM/build-attributes.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/build-attributes.ll?rev=319303&r1=319302&r2=319303&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/build-attributes.ll (original)
+++ llvm/trunk/test/CodeGen/ARM/build-attributes.ll Wed Nov 29 02:12:15 2017
@@ -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

Added: llvm/trunk/test/MC/ARM/directive-arch-armv7e-m.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/ARM/directive-arch-armv7e-m.s?rev=319303&view=auto
==============================================================================
--- llvm/trunk/test/MC/ARM/directive-arch-armv7e-m.s (added)
+++ llvm/trunk/test/MC/ARM/directive-arch-armv7e-m.s Wed Nov 29 02:12:15 2017
@@ -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: }

Added: llvm/trunk/test/MC/ARM/directive-arch-armv7em.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/ARM/directive-arch-armv7em.s?rev=319303&view=auto
==============================================================================
--- llvm/trunk/test/MC/ARM/directive-arch-armv7em.s (added)
+++ llvm/trunk/test/MC/ARM/directive-arch-armv7em.s Wed Nov 29 02:12:15 2017
@@ -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: }