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llvm-project/llvm/test/CodeGen/Mips/micromips-atomic1.ll

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[mips][microMIPS] Fix bugs related to atomic SC/LL instructions Fix bugs related to atomic microMIPS SC/LL instructions: While expanding atomic operations the mips32r2 encoding was emitted instead of microMIPS. Differential Revision: http://reviews.llvm.org/D6659 llvm-svn: 224524
2014-12-19 00:39:29 +08:00
; RUN: llc -march=mipsel -filetype=obj --disable-machine-licm -mattr=micromips < %s -o - \
[llvm-objdump] Support detection of feature bits from the object and implement this for Mips. Summary: The Mips implementation only covers the feature bits described by the ELF e_flags so far. Mips stores additional feature bits such as MSA in the .MIPS.abiflags section. Also fixed a small bug this revealed where microMIPS wouldn't add the EF_MIPS_MICROMIPS flag when using -filetype=obj. Reviewers: echristo, rafael Subscribers: rafael, mehdi_amini, dsanders, sdardis, llvm-commits Differential Revision: http://reviews.llvm.org/D21125 llvm-svn: 272880
2016-06-16 17:17:03 +08:00
; RUN: | llvm-objdump -no-show-raw-insn -d - | FileCheck %s -check-prefix=MICROMIPS
[mips][microMIPS] Fix bugs related to atomic SC/LL instructions Fix bugs related to atomic microMIPS SC/LL instructions: While expanding atomic operations the mips32r2 encoding was emitted instead of microMIPS. Differential Revision: http://reviews.llvm.org/D6659 llvm-svn: 224524
2014-12-19 00:39:29 +08:00
; 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]+}})
}