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| author | Tim Northover <tnorthover@apple.com> | 2013-10-07 11:10:47 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2013-10-07 11:10:47 +0000 |
| commit | cf3e4cb29a5fd485f11354060bb7a99e8cfdaf09 (patch) | |
| tree | 9d2dde8a3a23df35f617e28ab1e8a04e099f2620 /test/MC/ARM/thumb-hints.s | |
| parent | ae06a63be5a1279739e0c8a2006e72f4bc687d57 (diff) | |
| download | llvm-cf3e4cb29a5fd485f11354060bb7a99e8cfdaf09.tar.gz llvm-cf3e4cb29a5fd485f11354060bb7a99e8cfdaf09.tar.bz2 llvm-cf3e4cb29a5fd485f11354060bb7a99e8cfdaf09.tar.xz | |
ARM: allow cortex-m0 to use hint instructions
The hint instructions ("nop", "yield", etc) are mostly Thumb2-only, but have
been ported across to the v6M architecture. Fortunately, v6M seems to sit
nicely between v6 (thumb-1 only) and v6T2, so we can add a feature for it
fairly easily.
rdar://problem/15144406
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192097 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/MC/ARM/thumb-hints.s')
| -rw-r--r-- | test/MC/ARM/thumb-hints.s | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/test/MC/ARM/thumb-hints.s b/test/MC/ARM/thumb-hints.s new file mode 100644 index 0000000000..73e83621a9 --- /dev/null +++ b/test/MC/ARM/thumb-hints.s @@ -0,0 +1,34 @@ +@ RUN: llvm-mc -triple=thumbv7-apple-darwin -show-encoding < %s | FileCheck %s +@ RUN: llvm-mc -triple=thumbv6-apple-darwin -mcpu=cortex-m0 -show-encoding < %s | FileCheck %s +@ RUN: not llvm-mc -triple=thumbv6-apple-darwin -show-encoding < %s > %t 2> %t2 +@ RUN: FileCheck %s --check-prefix=CHECK-EVIL-PRE-UAL < %t +@ RUN: FileCheck %s --check-prefix CHECK-ERROR < %t2 + + .syntax unified + + nop + yield + wfe + wfi + sev +@ CHECK: nop @ encoding: [0x00,0xbf] +@ CHECK: yield @ encoding: [0x10,0xbf] +@ CHECK: wfe @ encoding: [0x20,0xbf] +@ CHECK: wfi @ encoding: [0x30,0xbf] +@ CHECK: sev @ encoding: [0x40,0xbf] + + +@ CHECK-EVIL-PRE-UAL: mov r8, r8 @ encoding: [0xc0,0x46] + + +@ CHECK-ERROR: error: instruction requires: armv6m or armv6t2 +@ CHECK-ERROR-NEXT: yield + +@ CHECK-ERROR: error: instruction requires: armv6m or armv6t2 +@ CHECK-ERROR-NEXT: wfe + +@ CHECK-ERROR: error: instruction requires: armv6m or armv6t2 +@ CHECK-ERROR-NEXT: wfi + +@ CHECK-ERROR: error: instruction requires: armv6m or armv6t2 +@ CHECK-ERROR-NEXT: sev |