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Increase the number of Cirrus scratch registers from 4 to 8 (ie half of them)
Index: gcc-4.2.4/gcc/config/arm/arm.h
===================================================================
--- gcc-4.2.4.orig/gcc/config/arm/arm.h 2007-09-01 16:28:30.000000000 +0100
+++ gcc-4.2.4/gcc/config/arm/arm.h 2009-08-09 15:45:06.000000000 +0100
@@ -562,8 +562,8 @@
/*
mvf0 Cirrus floating point result
- mvf1-mvf3 Cirrus floating point scratch
- mvf4-mvf15 S Cirrus floating point variable. */
+ mvf1-mvf7 Cirrus floating point scratch
+ mvf8-mvf15 S Cirrus floating point variable. */
/* s0-s15 VFP scratch (aka d0-d7).
s16-s31 S VFP variable (aka d8-d15).
@@ -680,7 +680,7 @@
regno <= LAST_CIRRUS_FP_REGNUM; ++ regno) \
{ \
fixed_regs[regno] = 0; \
- call_used_regs[regno] = regno < FIRST_CIRRUS_FP_REGNUM + 4; \
+ call_used_regs[regno] = regno < FIRST_CIRRUS_FP_REGNUM + 8; \
} \
} \
if (TARGET_VFP) \
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