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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2010-11-15 23:10:30 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2010-11-15 23:10:30 +0000 |
| commit | 7339fb5dae58df55857a97058d7905aed5868308 (patch) | |
| tree | 3e2011f50f0b210b5ebc7b5957503805973a1def | |
| parent | bc4434135fca0e0feff89cf6fe3baa25c6bd4ee0 (diff) | |
| download | external_llvm-7339fb5dae58df55857a97058d7905aed5868308.zip external_llvm-7339fb5dae58df55857a97058d7905aed5868308.tar.gz external_llvm-7339fb5dae58df55857a97058d7905aed5868308.tar.bz2 | |
Change the 11 byte nop to be a single instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119286 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86AsmBackend.cpp | 6 | ||||
| -rw-r--r-- | test/MC/MachO/x86_32-optimal_nop.s | 4 |
2 files changed, 4 insertions, 6 deletions
diff --git a/lib/Target/X86/X86AsmBackend.cpp b/lib/Target/X86/X86AsmBackend.cpp index a030196..8910c42 100644 --- a/lib/Target/X86/X86AsmBackend.cpp +++ b/lib/Target/X86/X86AsmBackend.cpp @@ -235,10 +235,8 @@ bool X86AsmBackend::WriteNopData(uint64_t Count, MCObjectWriter *OW) const { {0x66, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00}, // nopw %cs:0L(%[re]ax,%[re]ax,1) {0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00}, - // nopl 0(%[re]ax,%[re]ax,1) - // nopw 0(%[re]ax,%[re]ax,1) - {0x0f, 0x1f, 0x44, 0x00, 0x00, - 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00}, + // nopw %cs:0L(%[re]ax,%[re]ax,1) + {0x66, 0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00}, // nopw 0(%[re]ax,%[re]ax,1) // nopw 0(%[re]ax,%[re]ax,1) {0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00, diff --git a/test/MC/MachO/x86_32-optimal_nop.s b/test/MC/MachO/x86_32-optimal_nop.s index d5dcd55..09c541f 100644 --- a/test/MC/MachO/x86_32-optimal_nop.s +++ b/test/MC/MachO/x86_32-optimal_nop.s @@ -104,7 +104,7 @@ ret ret # nopw %cs:0L(%[re]ax,%[re]ax,1) - # 0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 + # 0x66, 0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 .align 4, 0x90 ret # 12 byte nop test @@ -192,7 +192,7 @@ f0: // CHECK: ), // CHECK: ('_relocations', [ // CHECK: ]) -// CHECK: ('_section_data', 'c390c300 00000000 00000000 00000000 c3c36690 c3000000 00000000 00000000 c30f1f00 c3000000 00000000 00000000 c3c3c3c3 0f1f4000 c3000000 00000000 c3c3c30f 1f440000 c3000000 00000000 c3c3660f 1f440000 c3000000 00000000 c30f1f80 00000000 c3000000 00000000 c3c3c3c3 c3c3c3c3 c3000000 00000000 c3c3c3c3 c3c3c366 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c3c3c3 c3c3c366 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c3c3c3 c30f1f44 0000660f 1f440000 c3000000 00000000 00000000 00000000 c3c3c3c3 660f1f44 0000660f 1f440000 c3000000 00000000 00000000 00000000 c3c3c366 0f1f4400 000f1f80 00000000 c3000000 00000000 00000000 00000000 c3c30f1f 80000000 000f1f80 00000000 c3000000 00000000 00000000 00000000 c30f1f80 00000000 0f1f8400 00000000 c3') +// CHECK: ('_section_data', 'c390c300 00000000 00000000 00000000 c3c36690 c3000000 00000000 00000000 c30f1f00 c3000000 00000000 00000000 c3c3c3c3 0f1f4000 c3000000 00000000 c3c3c30f 1f440000 c3000000 00000000 c3c3660f 1f440000 c3000000 00000000 c30f1f80 00000000 c3000000 00000000 c3c3c3c3 c3c3c3c3 c3000000 00000000 c3c3c3c3 c3c3c366 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c3c3c3 c3c3c366 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c3c3c3 c366662e 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c3c3c3 660f1f44 0000660f 1f440000 c3000000 00000000 00000000 00000000 c3c3c366 0f1f4400 000f1f80 00000000 c3000000 00000000 00000000 00000000 c3c30f1f 80000000 000f1f80 00000000 c3000000 00000000 00000000 00000000 c30f1f80 00000000 0f1f8400 00000000 c3') // CHECK: # Section 1 // CHECK: (('section_name', '__const\x00\x00\x00\x00\x00\x00\x00\x00\x00') // CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00') |