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| author | Venkatraman Govindaraju <venkatra@cs.wisc.edu> | 2014-03-01 05:45:09 +0000 |
|---|---|---|
| committer | Venkatraman Govindaraju <venkatra@cs.wisc.edu> | 2014-03-01 05:45:09 +0000 |
| commit | 2b1682bcd42fc2a2daf772b063dc18fec0e2888a (patch) | |
| tree | 85f4ff81a61fb8e081c3371b1bf41cf7d85f3720 | |
| parent | 9fc29098dfa684de53dd180aa93e94c39c388631 (diff) | |
| download | bcm5719-llvm-2b1682bcd42fc2a2daf772b063dc18fec0e2888a.tar.gz bcm5719-llvm-2b1682bcd42fc2a2daf772b063dc18fec0e2888a.zip | |
[Sparc] Implement writeNopData. Emit actual NOP instruction instead of just filling with zeroes.
llvm-svn: 202572
| -rw-r--r-- | llvm/lib/Target/Sparc/MCTargetDesc/SparcAsmBackend.cpp | 11 | ||||
| -rw-r--r-- | llvm/test/MC/Sparc/sparc-nop-data.s | 11 |
2 files changed, 19 insertions, 3 deletions
diff --git a/llvm/lib/Target/Sparc/MCTargetDesc/SparcAsmBackend.cpp b/llvm/lib/Target/Sparc/MCTargetDesc/SparcAsmBackend.cpp index 812f4b73bd1..f6c58165497 100644 --- a/llvm/lib/Target/Sparc/MCTargetDesc/SparcAsmBackend.cpp +++ b/llvm/lib/Target/Sparc/MCTargetDesc/SparcAsmBackend.cpp @@ -200,9 +200,14 @@ namespace { } bool writeNopData(uint64_t Count, MCObjectWriter *OW) const { - // FIXME: Zero fill for now. - for (uint64_t i = 0; i != Count; ++i) - OW->Write8(0); + // Cannot emit NOP with size not multiple of 32 bits. + if (Count % 4 != 0) + return false; + + uint64_t NumNops = Count / 4; + for (uint64_t i = 0; i != NumNops; ++i) + OW->Write32(0x01000000); + return true; } diff --git a/llvm/test/MC/Sparc/sparc-nop-data.s b/llvm/test/MC/Sparc/sparc-nop-data.s new file mode 100644 index 00000000000..1538505af73 --- /dev/null +++ b/llvm/test/MC/Sparc/sparc-nop-data.s @@ -0,0 +1,11 @@ +! RUN: llvm-mc %s -arch=sparc -filetype=obj | llvm-readobj -s -sd | FileCheck %s +! RUN: llvm-mc %s -arch=sparcv9 -filetype=obj | llvm-readobj -s -sd | FileCheck %s + +! CHECK: 0000: BA1F401D 01000000 01000000 01000000 +! CHECK: 0010: BA1F401D + +foo: + xor %i5, %i5, %i5 + .align 16 + xor %i5, %i5, %i5 + |
