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| author | Florian Hahn <florian.hahn@arm.com> | 2017-07-12 11:52:28 +0000 |
|---|---|---|
| committer | Florian Hahn <florian.hahn@arm.com> | 2017-07-12 11:52:28 +0000 |
| commit | 745266b2a7b4903e592915a5bfad747156076979 (patch) | |
| tree | eb168ef0188beb3af486410e8b2c4bdd7e38ab26 /llvm/test/Linker/link-arm-and-thumb-module-inline-asm.ll | |
| parent | ff7f42e61a13e8b8e26c43891d02f573d86b8ce5 (diff) | |
| download | bcm5719-llvm-745266b2a7b4903e592915a5bfad747156076979.tar.gz bcm5719-llvm-745266b2a7b4903e592915a5bfad747156076979.zip | |
[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
Diffstat (limited to 'llvm/test/Linker/link-arm-and-thumb-module-inline-asm.ll')
| -rw-r--r-- | llvm/test/Linker/link-arm-and-thumb-module-inline-asm.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/test/Linker/link-arm-and-thumb-module-inline-asm.ll b/llvm/test/Linker/link-arm-and-thumb-module-inline-asm.ll new file mode 100644 index 00000000000..13779f37ffa --- /dev/null +++ b/llvm/test/Linker/link-arm-and-thumb-module-inline-asm.ll @@ -0,0 +1,20 @@ +; 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 |
