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| author | H. Peter Anvin <hpa@linux.intel.com> | 2010-08-24 14:08:16 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2010-08-24 14:08:16 -0700 |
| commit | 9df010725faff9c0bf4dccd3bc45f871293d5d64 (patch) | |
| tree | 755a351a77b629a5f397c1eddf627e2546e1e82b /parser.c | |
| parent | 47fb7bc088f4468053070795ac536d04c812b6df (diff) | |
| download | nasm-9df010725faff9c0bf4dccd3bc45f871293d5d64.tar.gz nasm-9df010725faff9c0bf4dccd3bc45f871293d5d64.tar.bz2 nasm-9df010725faff9c0bf4dccd3bc45f871293d5d64.zip | |
Optimize mov r64,imm
Handle immediate-size optimization for "mov r64,imm" -- reduce it to
"mov r32,imm32" or "mov r64,imm32" as appropriate.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'parser.c')
| -rw-r--r-- | parser.c | 9 |
1 files changed, 8 insertions, 1 deletions
@@ -843,7 +843,8 @@ is_expression: if(optimizing >= 0 && !(result->oprs[operand].type & STRICT)) { /* Be optimistic */ - result->oprs[operand].type |= SBYTE16 | SBYTE32 | SBYTE64; + result->oprs[operand].type |= + SBYTE16 | SBYTE32 | SBYTE64 | UDWORD64 | SDWORD64; } } else if (is_reloc(value)) { /* it's immediate */ result->oprs[operand].type |= IMMEDIATE; @@ -865,6 +866,12 @@ is_expression: result->oprs[operand].type |= SBYTE32; if (v16 >= -128 && v16 <= 127) result->oprs[operand].type |= SBYTE16; + if ((uint64_t)v64 <= UINT64_C(0xffffffff)) + result->oprs[operand].type |= UDWORD64; + if (v64 >= -INT64_C(2147483648) && + v64 <= INT64_C(2147483647)) + result->oprs[operand].type |= SDWORD64; + } } } else { /* it's a register */ |