derek.holloway
7502bf64a4
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29 lines
1.1 KiB
LLVM
29 lines
1.1 KiB
LLVM
; RUN: llc -mtriple=mipsel -filetype=obj --disable-machine-licm -mattr=micromips < %s -o - \
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; RUN: | llvm-objdump --no-print-imm-hex --no-show-raw-insn -d - | FileCheck %s --check-prefix=MICROMIPS
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; Use llvm-objdump to check wheter the encodings of microMIPS atomic instructions are correct.
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; While emitting assembly files directly when in microMIPS mode, it is possible to emit a mips32r2
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; instruction instead of microMIPS instruction, and since many mips32r2 and microMIPS
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; instructions have identical assembly formats, invalid instruction cannot be detected.
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@y = common global i8 0, align 1
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define signext i8 @AtomicLoadAdd8(i8 signext %incr) nounwind {
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entry:
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%0 = atomicrmw add ptr @y, i8 %incr monotonic
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ret i8 %0
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; MICROMIPS: ll ${{[0-9]+}}, 0(${{[0-9]+}})
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; MICROMIPS: sc ${{[0-9]+}}, 0(${{[0-9]+}})
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}
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define signext i8 @AtomicCmpSwap8(i8 signext %oldval, i8 signext %newval) nounwind {
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entry:
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%pair0 = cmpxchg ptr @y, i8 %oldval, i8 %newval monotonic monotonic
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%0 = extractvalue { i8, i1 } %pair0, 0
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ret i8 %0
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; MICROMIPS: ll ${{[0-9]+}}, 0(${{[0-9]+}})
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; MICROMIPS: sc ${{[0-9]+}}, 0(${{[0-9]+}})
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}
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