From: Julian Seward <jseward@acm.org>
Date: Sun, 19 Nov 2006 02:05:47 +0000 (+0000)
Subject: On amd64, allow the register allocator to use %r10 which it previously
X-Git-Tag: svn/VALGRIND_3_3_1^2~83
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=50a86978591be71b18e6552ac057bfc9387701ea;p=thirdparty%2Fvalgrind.git

On amd64, allow the register allocator to use %r10 which it previously
did not.  This gives a 0%-3% speedup, mostly closer to the 0% end.



git-svn-id: svn://svn.valgrind.org/vex/trunk@1680
---

diff --git a/VEX/priv/host-amd64/hdefs.c b/VEX/priv/host-amd64/hdefs.c
index a703180648..602b197f3f 100644
--- a/VEX/priv/host-amd64/hdefs.c
+++ b/VEX/priv/host-amd64/hdefs.c
@@ -168,7 +168,7 @@ void getAllocableRegs_AMD64 ( Int* nregs, HReg** arr )
    (*arr)[ 5] = hregAMD64_XMM9();
 #endif
 #if 1
-   *nregs = 19;
+   *nregs = 20;
    *arr = LibVEX_Alloc(*nregs * sizeof(HReg));
    (*arr)[ 0] = hregAMD64_RSI();
    (*arr)[ 1] = hregAMD64_RDI();
@@ -190,7 +190,7 @@ void getAllocableRegs_AMD64 ( Int* nregs, HReg** arr )
    (*arr)[16] = hregAMD64_XMM10();
    (*arr)[17] = hregAMD64_XMM11();
    (*arr)[18] = hregAMD64_XMM12();
-
+   (*arr)[19] = hregAMD64_R10();
 #endif
 }