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powerpc64 code gen changes with -g
- From: Alan Modra <amodra at bigpond dot net dot au>
- To: gcc-patches at gcc dot gnu dot org
- Cc: David Edelsohn <dje at watson dot ibm dot com>
- Date: Tue, 18 Mar 2003 20:03:05 +1030
- Subject: powerpc64 code gen changes with -g
We don't want to change generated code on powerpc64-linux when
debug info is enabled, and I suspect the same is true for any ELF
target. Since we already test for ABI_DARWIN, that leaves only
the XCOFF targets (looks like TARGET_MACOS and OBJECT_PEF is dead).
* config/rs6000/rs6000.c (rs6000_stack_info): Only require a frame
when debugging on XCOFF targets. Delete "abi" temp.
OK mainline?
Index: gcc/config/rs6000/rs6000.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/rs6000/rs6000.c,v
retrieving revision 1.443
diff -u -p -r1.443 rs6000.c
--- gcc/config/rs6000/rs6000.c 18 Mar 2003 02:28:46 -0000 1.443
+++ gcc/config/rs6000/rs6000.c 18 Mar 2003 08:00:42 -0000
@@ -9168,7 +9168,6 @@ rs6000_stack_info ()
static rs6000_stack_t info, zero_info;
rs6000_stack_t *info_ptr = &info;
int reg_size = TARGET_POWERPC64 ? 8 : 4;
- enum rs6000_abi abi;
int ehrd_size;
int total_raw_size;
@@ -9186,15 +9185,15 @@ rs6000_stack_info ()
}
/* Select which calling sequence. */
- info_ptr->abi = abi = DEFAULT_ABI;
+ info_ptr->abi = DEFAULT_ABI;
/* Calculate which registers need to be saved & save area size. */
info_ptr->first_gp_reg_save = first_reg_to_save ();
/* Assume that we will have to save RS6000_PIC_OFFSET_TABLE_REGNUM,
even if it currently looks like we won't. */
if (((TARGET_TOC && TARGET_MINIMAL_TOC)
- || (flag_pic == 1 && abi == ABI_V4)
- || (flag_pic && abi == ABI_DARWIN))
+ || (flag_pic == 1 && DEFAULT_ABI == ABI_V4)
+ || (flag_pic && DEFAULT_ABI == ABI_DARWIN))
&& info_ptr->first_gp_reg_save > RS6000_PIC_OFFSET_TABLE_REGNUM)
info_ptr->gp_size = reg_size * (32 - RS6000_PIC_OFFSET_TABLE_REGNUM);
else
@@ -9237,7 +9236,7 @@ rs6000_stack_info ()
|| (info_ptr->first_fp_reg_save != 64
&& !FP_SAVE_INLINE (info_ptr->first_fp_reg_save))
|| info_ptr->first_altivec_reg_save <= LAST_ALTIVEC_REGNO
- || (abi == ABI_V4 && current_function_calls_alloca)
+ || (DEFAULT_ABI == ABI_V4 && current_function_calls_alloca)
|| (DEFAULT_ABI == ABI_DARWIN
&& flag_pic
&& current_function_uses_pic_offset_table)
@@ -9253,7 +9252,7 @@ rs6000_stack_info ()
|| regs_ever_live[CR4_REGNO])
{
info_ptr->cr_save_p = 1;
- if (abi == ABI_V4)
+ if (DEFAULT_ABI == ABI_V4)
info_ptr->cr_size = reg_size;
}
@@ -9299,7 +9298,7 @@ rs6000_stack_info ()
}
/* Calculate the offsets. */
- switch (abi)
+ switch (DEFAULT_ABI)
{
case ABI_NONE:
default:
@@ -9428,14 +9427,18 @@ rs6000_stack_info ()
if (info_ptr->calls_p)
info_ptr->push_p = 1;
- else if (abi == ABI_V4)
+ else if (DEFAULT_ABI == ABI_V4)
info_ptr->push_p = total_raw_size > info_ptr->fixed_size;
+ else if (frame_pointer_needed)
+ info_ptr->push_p = 1;
+
+ else if (TARGET_XCOFF && write_symbols != NO_DEBUG)
+ info_ptr->push_p = 1;
+
else
- info_ptr->push_p = (frame_pointer_needed
- || (abi != ABI_DARWIN && write_symbols != NO_DEBUG)
- || ((total_raw_size - info_ptr->fixed_size)
- > (TARGET_32BIT ? 220 : 288)));
+ info_ptr->push_p
+ = total_raw_size - info_ptr->fixed_size > (TARGET_32BIT ? 220 : 288);
/* Zero offsets if we're not saving those registers. */
if (info_ptr->fp_size == 0)
--
Alan Modra
IBM OzLabs - Linux Technology Centre