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re PR target/30282 (Optimization flag -O1 -fschedule-insns2 cause red zone to be used when there is none)

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PR target/30282
	* config/rs6000/rs6000.c (rs6000_emit_stack_reset): Always emit
	blockage for ABI_V4.

From-SVN: r181056
This commit is contained in:
Alan Modra 2011-11-07 11:44:33 +10:30
parent c5219bb0ec
commit d85087f6a0
2 changed files with 9 additions and 3 deletions
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10
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-11-07 Alan Modra <amodra@gmail.com>
PR target/30282
* config/rs6000/rs6000.c (rs6000_emit_stack_reset): Always emit
blockage for ABI_V4.
2011-11-06 Dave Korn <dave.korn.cygwin@gmail.com>
* config/i386/cygwin.h (LIBGCJ_SONAME): Updated to match recent
@ -147,7 +153,7 @@
* optabs.c (expand_sync_operation, expand_sync_fetch_operation): Remove.
(expand_sync_lock_test_and_set): Remove.
(expand_atomic_load, expand_atomic_store): New.
(expand_atomic_exchange): New.
(expand_atomic_exchange): New.
(expand_atomic_compare_and_swap): New. Implements
atomic_compare_exchange via compare and swap.
(struct atomic_op_functions): Opcode table struct for fetch ops.
@ -5806,7 +5812,7 @@
* hwint.h (HOST_WIDE_INT_PRINT_HEX_PURE): Add.
* lto-streamer.c (lto_get_section_name): Remove crc32_string.
Handle numerical random seed.
Handle numerical random seed.
* lto-streamer.h (lto_file_decl_data): Change id to
unsigned HOST_WIDE_INT.
* toplev.c (random_seed): Add.

2
gcc/config/rs6000/rs6000.c
View File

@ -19661,7 +19661,7 @@ rs6000_emit_stack_reset (rs6000_stack_t *info,
{
/* This blockage is needed so that sched doesn't decide to move
the sp change before the register restores. */
if (frame_reg_rtx != sp_reg_rtx
if (DEFAULT_ABI == ABI_V4
|| (TARGET_SPE_ABI
&& info->spe_64bit_regs_used != 0
&& info->first_gp_reg_save != 32))