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Emit unaligned access build attribute for ARM

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Patch by Charlie Turner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219301 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Renato Golin 2014-10-08 12:26:22 +00:00
parent ef2ed3f465
commit 1e059a88f8
2 changed files with 35 additions and 0 deletions
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7
lib/Target/ARM/ARMAsmPrinter.cpp
View File

@ -706,6 +706,13 @@ void ARMAsmPrinter::emitAttributes() {
ATS.emitAttribute(ARMBuildAttrs::ABI_FP_number_model,
ARMBuildAttrs::AllowIEE754);
if (Subtarget->allowsUnalignedMem())
ATS.emitAttribute(ARMBuildAttrs::CPU_unaligned_access,
ARMBuildAttrs::Allowed);
else
ATS.emitAttribute(ARMBuildAttrs::CPU_unaligned_access,
ARMBuildAttrs::Not_Allowed);
// FIXME: add more flags to ARMBuildAttributes.h
// 8-bytes alignment stuff.
ATS.emitAttribute(ARMBuildAttrs::ABI_align_needed, 1);

28
test/CodeGen/ARM/build-attributes.ll
View File

@ -44,6 +44,30 @@
; RUN: llc < %s -mtriple=arm-none-linux-gnueabi | FileCheck %s --check-prefix=PCS-R9-USE
; RUN: llc < %s -mtriple=arm-none-linux-gnueabi -arm-reserve-r9 | FileCheck %s --check-prefix=PCS-R9-RESERVE
; ARMv8a (AArch32)
; RUN: llc < %s -mtriple=armv8-none-linux-gnueabi -mcpu=cortex-a57 -arm-no-strict-align | FileCheck %s --check-prefix=NO-STRICT-ALIGN
; RUN: llc < %s -mtriple=armv8-none-linux-gnueabi -mcpu=cortex-a57 -arm-strict-align | FileCheck %s --check-prefix=STRICT-ALIGN
; ARMv7a
; RUN: llc < %s -mtriple=armv7-none-linux-gnueabi -mcpu=cortex-a7 -arm-no-strict-align | FileCheck %s --check-prefix=NO-STRICT-ALIGN
; RUN: llc < %s -mtriple=armv7-none-linux-gnueabi -mcpu=cortex-a7 -arm-strict-align | FileCheck %s --check-prefix=STRICT-ALIGN
; ARMv7r
; RUN: llc < %s -mtriple=armv7r-none-linux-gnueabi -mcpu=cortex-r5 -arm-no-strict-align | FileCheck %s --check-prefix=NO-STRICT-ALIGN
; RUN: llc < %s -mtriple=armv7r-none-linux-gnueabi -mcpu=cortex-r5 -arm-strict-align | FileCheck %s --check-prefix=STRICT-ALIGN
; ARMv7m
; RUN: llc < %s -mtriple=thumbv7m-none-linux-gnueabi -mcpu=cortex-m3 -arm-no-strict-align | FileCheck %s --check-prefix=NO-STRICT-ALIGN
; RUN: llc < %s -mtriple=thumbv7m-none-linux-gnueabi -mcpu=cortex-m3 -arm-strict-align | FileCheck %s --check-prefix=STRICT-ALIGN
; ARMv6
; RUN: llc < %s -mtriple=armv6-none-netbsd-gnueabi -mcpu=arm1136j-s | FileCheck %s --check-prefix=NO-STRICT-ALIGN
; RUN: llc < %s -mtriple=armv6-none-linux-gnueabi -mcpu=arm1136j-s | FileCheck %s --check-prefix=STRICT-ALIGN
; ARMv6m
; RUN: llc < %s -mtriple=thumb-none-linux-gnueabi -arm-no-strict-align -mcpu=cortex-m0 | FileCheck %s --check-prefix=STRICT-ALIGN
; RUN: llc < %s -mtriple=thumb-none-linux-gnueabi -arm-strict-align -mcpu=cortex-m0 | FileCheck %s --check-prefix=STRICT-ALIGN
; RUN: llc < %s -mtriple=thumbv6m-none-linux-gnueabi -arm-no-strict-align | FileCheck %s --check-prefix=STRICT-ALIGN
; RUN: llc < %s -mtriple=thumbv6m-none-linux-gnueabi -arm-strict-align | FileCheck %s --check-prefix=STRICT-ALIGN
; ARMv5
; RUN: llc < %s -mtriple=armv5-none-linux-gnueabi -mcpu=arm1022e -arm-no-strict-align | FileCheck %s --check-prefix=NO-STRICT-ALIGN
; RUN: llc < %s -mtriple=armv5-none-linux-gnueabi -mcpu=arm1022e -arm-strict-align | FileCheck %s --check-prefix=STRICT-ALIGN
; XSCALE: .eabi_attribute 6, 5
; XSCALE: .eabi_attribute 8, 1
; XSCALE: .eabi_attribute 9, 1
@ -137,6 +161,10 @@
; V8-FPARMv8-NEON-CRYPTO: .fpu crypto-neon-fp-armv8
; V8-FPARMv8-NEON-CRYPTO: .eabi_attribute 12, 3
; Tag_CPU_unaligned_access
; NO-STRICT-ALIGN: .eabi_attribute 34, 1
; STRICT-ALIGN: .eabi_attribute 34, 0
; Tag_CPU_arch 'ARMv7'
; CORTEX-A7-CHECK: .eabi_attribute 6, 10
; CORTEX-A7-NOFPU: .eabi_attribute 6, 10