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llvm-mirror/test/Linker/link-arm-and-thumb-module-inline-asm.ll
Florian Hahn f4278d3016 [Linker] Add directives to support mixing ARM/Thumb module-level inline asm.
Summary:
By prepending `.text .thumb .balign 2` to the module-level inline
assembly from a Thumb module, the assembler will generate the assembly
from that module as Thumb, even if the destination module uses an ARM
triple. Similar directives are used for module-level inline assembly in
ARM modules.

The alignment and instruction set are reset based on the target triple
before emitting the first function label.

Reviewers: olista01, tejohnson, echristo, t.p.northover, rafael

Reviewed By: echristo

Subscribers: aemerson, javed.absar, eraman, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D34622

llvm-svn: 307772
2017-07-12 11:52:28 +00:00

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LLVM

; This test checks that proper directives to switch between ARM and Thumb mode
; are added when linking ARM and Thumb modules.
; RUN: llvm-as %s -o %t1.bc
; RUN: llvm-as %p/Inputs/thumb-module-inline-asm.ll -o %t2.bc
; RUN: llvm-link %t1.bc %t2.bc -S 2> %t3.out | FileCheck %s
target triple = "armv7-linux-gnueabihf"
module asm "add r1, r2, r2"
; CHECK: .text
; CHECK-NEXT: .balign 4
; CHECK-NEXT: .arm
; CHECK-NEXT: add r1, r2, r2
; CHECK-NEXT: module asm
; CHECK-NEXT: .text
; CHECK-NEXT: .balign 2
; CHECK-NEXT: .thumb
; CHECK-NEXT: orn r1, r2, r2