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a7b8d3d331
This finishes the job started in r198756, and creates separate opcodes for
64-bit vs. 32-bit versions of the rest of the RET instructions too.
LRETL/LRETQ are interesting... I can't see any justification for their
existence in the SDM. There should be no 'LRETL' in 64-bit mode, and no
need for a REX.W prefix for LRETQ. But this is what GAS does, and my
Sandybridge CPU and an Opteron 6376 concur when tested as follows:
asm __volatile__("pushq $0x1234\nmovq $0x33,%rax\nsalq $32,%rax\norq $1f,%rax\npushq %rax\nlretl $8\n1:");
asm __volatile__("pushq $1234\npushq $0x33\npushq $1f\nlretq $8\n1:");
asm __volatile__("pushq $0x33\npushq $1f\nlretq\n1:");
asm __volatile__("pushq $0x1234\npushq $0x33\npushq $1f\nlretq $8\n1:");
cf. PR8592 and commit r118903, which added LRETQ. I only added LRETIQ to
match it.
I don't quite understand how the Intel syntax parsing for ret
instructions is working, despite r154468 allegedly fixing it. Aren't the
explicitly sized 'retw', 'retd' and 'retq' supposed to work? I have at
least made the 'lretq' work with (and indeed *require*) the 'q'.
llvm-svn: 199106
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| .. | ||
| AlignedBundling | ||
| 3DNow.s | ||
| 2011-09-06-NoNewline.s | ||
| address-size.s | ||
| avx512-encodings.s | ||
| cfi_def_cfa-crash.s | ||
| fde-reloc.s | ||
| gnux32-dwarf-gen.s | ||
| intel-syntax-2.s | ||
| intel-syntax-directional-label.s | ||
| intel-syntax-encoding.s | ||
| intel-syntax-hex.s | ||
| intel-syntax.s | ||
| lit.local.cfg | ||
| padlock.s | ||
| relax-insn.s | ||
| ret.s | ||
| shuffle-comments.s | ||
| stackmap-nops.ll | ||
| x86_64-avx-clmul-encoding.s | ||
| x86_64-avx-encoding.s | ||
| x86_64-bmi-encoding.s | ||
| x86_64-encoding.s | ||
| x86_64-fma3-encoding.s | ||
| x86_64-fma4-encoding.s | ||
| x86_64-hle-encoding.s | ||
| x86_64-imm-widths.s | ||
| x86_64-rand-encoding.s | ||
| x86_64-rtm-encoding.s | ||
| x86_64-sse4a.s | ||
| x86_64-tbm-encoding.s | ||
| x86_64-xop-encoding.s | ||
| x86_directives.s | ||
| x86_errors.s | ||
| x86_long_nop.s | ||
| x86_nop.s | ||
| x86_operands.s | ||
| x86-16.s | ||
| x86-32-avx.s | ||
| x86-32-coverage.s | ||
| x86-32-fma3.s | ||
| x86-32-ms-inline-asm.s | ||
| x86-32.s | ||
| x86-64.s | ||
| x86-target-directives.s | ||