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re PR target/12817 ([SYSV] Altivec code generation error with many registers used) 

PR target/12817
	* config/rs6000/rs6000.c (rs6000_emit_prologue): Use r0 for vrsave.

From-SVN: r91553
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Alan Modra 2004-12-01 05:47:51 +00:00 committed by Alan Modra
parent 683e261713
commit eab97e449b
2 changed files with 9 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-12-01 Alan Modra <amodra@bigpond.net.au>
PR target/12817
* config/rs6000/rs6000.c (rs6000_emit_prologue): Use r0 for vrsave.
2004-12-01 Joseph S. Myers <joseph@codesourcery.com>
* doc/standards.texi: Update for C99 TC2.

6
gcc/config/rs6000/rs6000.c
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@ -14030,8 +14030,10 @@ rs6000_emit_prologue (void)
rtx reg, mem, vrsave;
int offset;
/* Get VRSAVE onto a GPR. */
reg = gen_rtx_REG (SImode, 12);
/* Get VRSAVE onto a GPR. Note that ABI_V4 might be using r12
as frame_reg_rtx and r11 as the static chain pointer for
nested functions. */
reg = gen_rtx_REG (SImode, 0);
vrsave = gen_rtx_REG (SImode, VRSAVE_REGNO);
if (TARGET_MACHO)
emit_insn (gen_get_vrsave_internal (reg));