From: Pat Haugen Date: Fri, 3 Jun 2005 17:18:04 +0000 (+0000) Subject: rs6000.c (rs6000_conditional_register_usage): Clear call_realy_used_regs[r2] when... X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7c9ac5c0354c587ba84956a4a34584ec2c7648cb;p=gcc.git rs6000.c (rs6000_conditional_register_usage): Clear call_realy_used_regs[r2] when ABI_AIX. 2005-06-03 Pat Haugen * config/rs6000/rs6000.c (rs6000_conditional_register_usage): Clear call_realy_used_regs[r2] when ABI_AIX. From-SVN: r100549 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 97461baff5a..22136dd307b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-06-03 Pat Haugen + + * config/rs6000/rs6000.c (rs6000_conditional_register_usage): + Clear call_realy_used_regs[r2] when ABI_AIX. + 2005-06-03 Richard Guenther PR middle-end/21858 diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index b82ee747c61..ce9164c66d5 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -3287,7 +3287,7 @@ rs6000_conditional_register_usage (void) if (! TARGET_POWER) fixed_regs[64] = 1; - /* 64-bit AIX reserves GPR13 for thread-private data. */ + /* 64-bit AIX and Linux reserve GPR13 for thread-private data. */ if (TARGET_64BIT) fixed_regs[13] = call_used_regs[13] = call_really_used_regs[13] = 1; @@ -3298,6 +3298,11 @@ rs6000_conditional_register_usage (void) fixed_regs[i] = call_used_regs[i] = call_really_used_regs[i] = 1; + /* The TOC register is not killed across calls in a way that is + visible to the compiler. */ + if (DEFAULT_ABI == ABI_AIX) + call_really_used_regs[2] = 0; + if (DEFAULT_ABI == ABI_V4 && PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM && flag_pic == 2)