Yasm Assembler mainline development tree (ffmpeg 依赖)

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Tag: Branch: Tree: 0ea57bf7bf

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yasm/modules/arch

History

Peter Johnson aa3e6ff9b9 Change some optimization settings so that imm8 optimizations actually get ... triggered for more cases and optimize from 64-bit down to 32-bit for 64-bit mov instructions. This change means that mov reg64, constant will be auto-sized up to 64 bits, but mov reg64, expr/symbol will default to 32 bits. You must use mov reg64, qword expr/symbol if you need 64 bits, or in GAS mode use movabsq expr/symbol, reg64. This makes the generated code smaller and default most usages into 32-bit relocations appropriate for ELF64 and Win64. Right now, 32-bit unsigned relocs are generated instead of 32-bit signed; this will need to be fixed. * x86arch.h (x86_insn.postop): Add X86_POSTOP_SIGNEXT_IMM32. * x86bc.c (x86_bc_insn_resolve): Implement. * x86id.re (OPAP_SImm32Avail): New flag. (MOD_Op2AddSp): New modifier to encode spare directly into 2nd opcode byte. (arith_insn): Use MOD_Op2AddSp and add forced-size override forms. (mov_insn): Use OPAP_SImm32Avail and add forced-size override form. (yasm_x86__finalize_insn): Implement new flag and modifier. Fix up testcases for changes. svn path=/trunk/yasm/; revision=1314		19 years ago
..
lc3b	Update all re2c input files to use case-insensitive strings. The code	19 years ago
x86	Change some optimization settings so that imm8 optimizations actually get	19 years ago
Makefile.inc	Change how man pages are built (and where they are built to). Building man	20 years ago
yasm_arch.xml	* yasm_arch.xml, yasm_arch.7: Fix typo in 64-bit implicit zero extension	20 years ago