http://llvm.org/bugs/show_bug.cgi?id=21695
Bug ID: 21695
Summary: Integrated assembler fails to set the target
architecture from .arch
Product: libraries
Version: trunk
Hardware: PC
OS: FreeBSD
Status: NEW
Severity: normal
Priority: P
Component: Backend: ARM
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 13406
--> http://llvm.org/bugs/attachment.cgi?id=13406&action=edit
Simple test case, build with clang -c -target arm-gnueabi-linux cpu-test.s
The attached test case, when built with "clang -c -target arm-gnueabi-linux
cpu-test.s", fails to assemble with the llvm integrated assembler with the
following error:
cpu-test.s:2:1: error: instruction requires: data-barriers
dsb
We use .arch in the FreeBSD kernel to build assembly code that will target a
known architecture however it may not have -march argument set causing the
build to fail.
In binutils the .arch directive sets the current target architecture, it can
then be changed later to a new architecture if needed.
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