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 36a92a56c09ed95d03a08966eebf0c04bfde101a..c9dce5afbcd015d4c75b1adfb3ebf3e2b99a57ca 100644 (file)
--- 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);
 }