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re PR rtl-optimization/60663 (Errors out on valid inline asm) 

PR rtl-optimization/60663
	* config/arm/arm.c (arm_new_rtx_costs): Improve ASM_OPERANDS case,
	avoid 0 cost.

From-SVN: r209419
This commit is contained in:
Kyrylo Tkachov 2014-04-15 14:04:06 +00:00 committed by Kyrylo Tkachov
parent 9ffc6d0bc2
commit 98a2fdfba6
2 changed files with 15 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-04-15 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR rtl-optimization/60663
* config/arm/arm.c (arm_new_rtx_costs): Improve ASM_OPERANDS case,
avoid 0 cost.
2014-04-15 Richard Biener <rguenther@suse.de> 2014-04-15 Richard Biener <rguenther@suse.de>
* lto-streamer.h (LTO_major_version): Bump to 4. * lto-streamer.h (LTO_major_version): Bump to 4.

12
gcc/config/arm/arm.c
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@ -10670,10 +10670,16 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
return true; return true;
case ASM_OPERANDS: case ASM_OPERANDS:
/* Just a guess. Cost one insn per input. */ {
*cost = COSTS_N_INSNS (ASM_OPERANDS_INPUT_LENGTH (x)); /* Just a guess. Guess number of instructions in the asm
return true; plus one insn per input. Always a minimum of COSTS_N_INSNS (1)
though (see PR60663). */
int asm_length = MAX (1, asm_str_count (ASM_OPERANDS_TEMPLATE (x)));
int num_operands = ASM_OPERANDS_INPUT_LENGTH (x);
*cost = COSTS_N_INSNS (asm_length + num_operands);
return true;
}
default: default:
if (mode != VOIDmode) if (mode != VOIDmode)
*cost = COSTS_N_INSNS (ARM_NUM_REGS (mode)); *cost = COSTS_N_INSNS (ARM_NUM_REGS (mode));