From: Julian Seward <jseward@acm.org>
Date: Mon, 4 Jul 2005 09:40:56 +0000 (+0000)
Subject: A further hack to reduce ppc32 reg-alloc costs: don't give the
X-Git-Tag: svn/VALGRIND_3_0_1^2~80
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1d7915ef7495e2f6458a71a8a93b982c06962a36;p=thirdparty%2Fvalgrind.git

A further hack to reduce ppc32 reg-alloc costs: don't give the
regalloc so many registers to play with.  In the majority of cases it
won't be able to make much use of vast hordes of FP and Altivec
registers anyway.



git-svn-id: svn://svn.valgrind.org/vex/trunk@1254
---

diff --git a/VEX/priv/host-ppc32/hdefs.c b/VEX/priv/host-ppc32/hdefs.c
index 36a92a56c0..c9dce5afbc 100644
--- a/VEX/priv/host-ppc32/hdefs.c
+++ b/VEX/priv/host-ppc32/hdefs.c
@@ -181,7 +181,7 @@ HReg hregPPC32_VR31 ( void ) { return mkHReg(31, HRcVec128, False); }
 void getAllocableRegs_PPC32 ( Int* nregs, HReg** arr )
 {
    UInt i=0;
-   *nregs = 90;
+   *nregs = 90 - 24 - 24;
    *arr = LibVEX_Alloc(*nregs * sizeof(HReg));
    // GPR0 = scratch reg where possible - some ops interpret as value zero
    // GPR1 = stack pointer
@@ -224,6 +224,7 @@ void getAllocableRegs_PPC32 ( Int* nregs, HReg** arr )
    (*arr)[i++] = hregPPC32_FPR5();
    (*arr)[i++] = hregPPC32_FPR6();
    (*arr)[i++] = hregPPC32_FPR7();
+/*
    (*arr)[i++] = hregPPC32_FPR8();
    (*arr)[i++] = hregPPC32_FPR9();
    (*arr)[i++] = hregPPC32_FPR10();
@@ -248,7 +249,7 @@ void getAllocableRegs_PPC32 ( Int* nregs, HReg** arr )
    (*arr)[i++] = hregPPC32_FPR29();
    (*arr)[i++] = hregPPC32_FPR30();
    (*arr)[i++] = hregPPC32_FPR31();
-
+*/
    (*arr)[i++] = hregPPC32_VR0();
    (*arr)[i++] = hregPPC32_VR1();
    (*arr)[i++] = hregPPC32_VR2();
@@ -257,6 +258,7 @@ void getAllocableRegs_PPC32 ( Int* nregs, HReg** arr )
    (*arr)[i++] = hregPPC32_VR5();
    (*arr)[i++] = hregPPC32_VR6();
    (*arr)[i++] = hregPPC32_VR7();
+/*
    (*arr)[i++] = hregPPC32_VR8();
    (*arr)[i++] = hregPPC32_VR9();
    (*arr)[i++] = hregPPC32_VR10();
@@ -281,7 +283,7 @@ void getAllocableRegs_PPC32 ( Int* nregs, HReg** arr )
    (*arr)[i++] = hregPPC32_VR29();
    (*arr)[i++] = hregPPC32_VR30();
    (*arr)[i++] = hregPPC32_VR31();
-
+*/
    vassert(i == *nregs);
 }