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The sources of the Free Pascal compiler, RTL, packages and utilities.
See https://www.freepascal.org/ for more info.
810acd82b2
- xorq %reg,%reg (identical registers) is now changed to xorl %reg,%reg if doing so removes the REX prefix.
- movw %bx,%ax; andl $0xffff,%eax, for example, is now changed to movzwl %bx,%eax as long as a conditional operation doesn't follow 'and' (checks to see if the CPU flags are in use).
- movzbq and movzwq get optimised to movzbl and movzwl respectively if doing so removes the REX prefix.
- Removal of optimisation code that zero-extends from 32-bit to 64-bit, because there isn't actually a valid combination of opcodes for MOVZX that allows that (for registers,
just use MOV). This is not the case with MOVSX.
- movq is now optimised to movl even if the CPU flags are in use (this stops mov %reg,0 from being optimised to xor %reg,%reg if doing so breaks an algorithm that relies on them).
- Fixed typo in peephole message regarding movq to movl (it said movd instead).
- Made the peephole debug messages more consistent in formatting, some of which now have more detail.
* small fixes of the patch
git-svn-id: trunk@38070 -
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| compiler | ||
| installer | ||
| packages | ||
| rtl | ||
| tests | ||
| utils | ||
| .gitattributes | ||
| .gitignore | ||
| fpmake_add1.inc | ||
| fpmake_proc1.inc | ||
| fpmake.pp | ||
| Makefile | ||
| Makefile.fpc | ||