20b224046
Denys Vlasenko
2021-04-20
Subject
tls: further reduce register pressure in i386 assembly
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networking/tls_pstm_montgomery_reduce.c+3 -3
| @@ -102,11 +102,11 @@ asm( \ | |
| #define PROPCARRY \ | |
| asm( \ | |
| "addl %1,%0 \n\t" \ | |
| - | "setb %%al \n\t" \ |
| - | "movzbl %%al,%1 \n\t" \ |
| + | "sbb %1,%1 \n\t" \ |
| + | "neg %1 \n\t" \ |
| :"=g"(_c[LO]), "=r"(cy) \ | |
| :"0"(_c[LO]), "1"(cy) \ | |
| - | : "%eax", "cc") |
| + | :"cc") |
| /******************************************************************************/ | |
| #elif defined(PSTM_X86_64) | |