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| author | Kevin Enderby <enderby@apple.com> | 2014-01-10 00:43:32 +0000 |
|---|---|---|
| committer | Kevin Enderby <enderby@apple.com> | 2014-01-10 00:43:32 +0000 |
| commit | d9615670b7d2b6b43d19d6e8706e9d504f91030e (patch) | |
| tree | 44a4738660a192b844c043592a329829e99e4328 /test/MC/ARM/thumb2-cbn-to-next-inst.s | |
| parent | 36c48cad0d14cb1679f494c811554198308c4bc1 (diff) | |
| download | llvm-d9615670b7d2b6b43d19d6e8706e9d504f91030e.tar.gz llvm-d9615670b7d2b6b43d19d6e8706e9d504f91030e.tar.bz2 llvm-d9615670b7d2b6b43d19d6e8706e9d504f91030e.tar.xz | |
Fix a bug with the ARM thumb2 CBNZ and CBNZ instructions that
branch to the next instruction. This can not be encoded but can be
turned into a NOP.
rdar://15062072
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198904 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/MC/ARM/thumb2-cbn-to-next-inst.s')
| -rw-r--r-- | test/MC/ARM/thumb2-cbn-to-next-inst.s | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/MC/ARM/thumb2-cbn-to-next-inst.s b/test/MC/ARM/thumb2-cbn-to-next-inst.s new file mode 100644 index 0000000000..a7ad11b245 --- /dev/null +++ b/test/MC/ARM/thumb2-cbn-to-next-inst.s @@ -0,0 +1,33 @@ +@ RUN: llvm-mc -triple thumbv7-apple-darwin -filetype=obj -o %t.o %s +@ RUN: llvm-objdump -triple thumbv7-apple-darwin -d %t.o | FileCheck %s + +.thumb +start: +.thumb_func start + add r1, r2, r3 + cbnz r2, L1 @ this can't be encoded, must turn into a nop +L1: + add r4, r5, r6 + cbnz r2, L2 + sub r7, r8, r9 +L2: + add r7, r8, r9 + cbz r2, L3 @ this can't be encoded, must turn into a nop +L3: + add r10, r11, r12 + cbz r2, L4 + sub r7, r8, r9 +L4: + add r3, r4, r5 + +@ CHECK: 0: 02 eb 03 01 add.w r1, r2, r3 +@ CHECK: 4: 00 bf nop +@ CHECK: 6: 05 eb 06 04 add.w r4, r5, r6 +@ CHECK: a: 0a b9 cbnz r2, #2 +@ CHECK: c: a8 eb 09 07 sub.w r7, r8, r9 +@ CHECK: 10: 08 eb 09 07 add.w r7, r8, r9 +@ CHECK: 14: 00 bf nop +@ CHECK: 16: 0b eb 0c 0a add.w r10, r11, r12 +@ CHECK: 1a: 0a b1 cbz r2, #2 +@ CHECK: 1c: a8 eb 09 07 sub.w r7, r8, r9 +@ CHECK: 20: 04 eb 05 03 add.w r3, r4, r5 |