diff options
| author | Henrik Gramner <henrik@gramner.com> | 2017-04-22 20:30:35 +0200 |
|---|---|---|
| committer | James Darnley <jdarnley@obe.tv> | 2017-06-09 13:43:00 +0200 |
| commit | cd4ca8245963c6c1845a87b658822b0be0c99048 (patch) | |
| tree | 6c0b3e258c3043b317016c0e0606a6e44ae95686 /libavutil/x86 | |
| parent | 88dcdfad0964a954b6f185936c023dfd1c5d5e99 (diff) | |
x86inc: Prefer r14/r15 over r12/r13 on x86-64
Due to a peculiarity in the ModR/M addressing encoding, the r12 and r13
registers sometimes requires an additional byte when used as a base register.
r14 and r15 doesn't have that issue, so prefer using them.
Diffstat (limited to 'libavutil/x86')
| -rw-r--r-- | libavutil/x86/x86inc.asm | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm index bb1b1be191..122dc30b54 100644 --- a/libavutil/x86/x86inc.asm +++ b/libavutil/x86/x86inc.asm @@ -426,10 +426,10 @@ DECLARE_REG 7, rdi, 64 DECLARE_REG 8, rsi, 72 DECLARE_REG 9, rbx, 80 DECLARE_REG 10, rbp, 88 -DECLARE_REG 11, R12, 96 -DECLARE_REG 12, R13, 104 -DECLARE_REG 13, R14, 112 -DECLARE_REG 14, R15, 120 +DECLARE_REG 11, R14, 96 +DECLARE_REG 12, R15, 104 +DECLARE_REG 13, R12, 112 +DECLARE_REG 14, R13, 120 %macro PROLOGUE 2-5+ 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names... %assign num_args %1 @@ -530,10 +530,10 @@ DECLARE_REG 7, R10, 16 DECLARE_REG 8, R11, 24 DECLARE_REG 9, rbx, 32 DECLARE_REG 10, rbp, 40 -DECLARE_REG 11, R12, 48 -DECLARE_REG 12, R13, 56 -DECLARE_REG 13, R14, 64 -DECLARE_REG 14, R15, 72 +DECLARE_REG 11, R14, 48 +DECLARE_REG 12, R15, 56 +DECLARE_REG 13, R12, 64 +DECLARE_REG 14, R13, 72 %macro PROLOGUE 2-5+ ; #args, #regs, #xmm_regs, [stack_size,] arg_names... %assign num_args %1 |