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| author | Torbjorn Granlund <tg@gmplib.org> | 2019-08-25 10:32:03 +0200 |
|---|---|---|
| committer | Torbjorn Granlund <tg@gmplib.org> | 2019-08-25 10:32:03 +0200 |
| commit | d6ce709c13ca8793825f88324bfad9e6bb7f588f (patch) | |
| tree | c5af244ac4b884b78b0fefb6282827847a88f5ed | |
| parent | 9bfc5c10159b2e23e9e654541d9afae6383b7e47 (diff) | |
| download | gmp-d6ce709c13ca8793825f88324bfad9e6bb7f588f.tar.gz | |
Repeat tzcnt for exceptional lowz case. Remove dead code.
| -rw-r--r-- | mpn/x86_64/bd2/gcd_22.asm | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/mpn/x86_64/bd2/gcd_22.asm b/mpn/x86_64/bd2/gcd_22.asm index eba0846e2..7f402e603 100644 --- a/mpn/x86_64/bd2/gcd_22.asm +++ b/mpn/x86_64/bd2/gcd_22.asm @@ -119,10 +119,6 @@ L(gcd_11): mov u0, %rsi TCALL( mpn_gcd_11) -L(count_better): - rep;bsf u0, cnt C tzcnt! - jmp L(shr) - L(lowz):C We come here when v0 - u0 = 0 C 1. If v1 - u1 = 0, then gcd is u = v. C 2. Else compute gcd_21({v1,v0}, |u1-v1|) @@ -131,6 +127,7 @@ L(lowz):C We come here when v0 - u0 = 0 je L(end) xor t1, t1 + rep;bsf t0, cnt C tzcnt! mov u0, s0 mov u1, s1 mov u1, u0 |