diff options
Diffstat (limited to 'test/CodeGen/Mips/micromips-atomic1.ll')
| -rw-r--r-- | test/CodeGen/Mips/micromips-atomic1.ll | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/CodeGen/Mips/micromips-atomic1.ll b/test/CodeGen/Mips/micromips-atomic1.ll new file mode 100644 index 0000000..37c3d76 --- /dev/null +++ b/test/CodeGen/Mips/micromips-atomic1.ll @@ -0,0 +1,29 @@ +; RUN: llc -march=mipsel -filetype=obj --disable-machine-licm -mattr=micromips < %s -o - \ +; RUN: | llvm-objdump -no-show-raw-insn -arch mipsel -mcpu=mips32r2 -mattr=micromips -d - \ +; RUN: | FileCheck %s -check-prefix=MICROMIPS + +; Use llvm-objdump to check wheter the encodings of microMIPS atomic instructions are correct. +; While emitting assembly files directly when in microMIPS mode, it is possible to emit a mips32r2 +; instruction instead of microMIPS instruction, and since many mips32r2 and microMIPS +; instructions have identical assembly formats, invalid instruction cannot be detected. + +@y = common global i8 0, align 1 + +define signext i8 @AtomicLoadAdd8(i8 signext %incr) nounwind { +entry: + %0 = atomicrmw add i8* @y, i8 %incr monotonic + ret i8 %0 + +; MICROMIPS: ll ${{[0-9]+}}, 0(${{[0-9]+}}) +; MICROMIPS: sc ${{[0-9]+}}, 0(${{[0-9]+}}) +} + +define signext i8 @AtomicCmpSwap8(i8 signext %oldval, i8 signext %newval) nounwind { +entry: + %pair0 = cmpxchg i8* @y, i8 %oldval, i8 %newval monotonic monotonic + %0 = extractvalue { i8, i1 } %pair0, 0 + ret i8 %0 + +; MICROMIPS: ll ${{[0-9]+}}, 0(${{[0-9]+}}) +; MICROMIPS: sc ${{[0-9]+}}, 0(${{[0-9]+}}) +} |