Just a small clean-up in preparation for the FOR_EACH_SUBRTX patches.
insn_contains_asm can be tested more directly using extract_asm_operands,
which doesn't involve any subcalls and should therefore be more efficient
than calling for_each_rtx.
Tested on x86_64-linux-gnu. OK to install?
Thanks,
Richard
gcc/
* ira.c (insn_contains_asm_1, insn_contains_asm): Delete.
(compute_regs_asm_clobbered): Use extract_asm_operands instead.
Index: gcc/ira.c
===================================================================
--- gcc/ira.c 2014-07-30 20:04:53.199301309 +0100
+++ gcc/ira.c 2014-07-30 20:05:28.844636897 +0100
@@ -2221,25 +2221,6 @@ ira_bad_reload_regno (int regno, rtx in,
|| ira_bad_reload_regno_1 (regno, out));
}
-/* Return TRUE if *LOC contains an asm. */
-static int
-insn_contains_asm_1 (rtx *loc, void *data ATTRIBUTE_UNUSED)
-{
- if ( !*loc)
- return FALSE;
- if (GET_CODE (*loc) == ASM_OPERANDS)
- return TRUE;
- return FALSE;
-}
-
-
-/* Return TRUE if INSN contains an ASM. */
-static bool
-insn_contains_asm (rtx insn)
-{
- return for_each_rtx (&insn, insn_contains_asm_1, NULL);
-}
-
/* Add register clobbers from asm statements. */
static void
compute_regs_asm_clobbered (void)
@@ -2253,7 +2234,7 @@ compute_regs_asm_clobbered (void)
{
df_ref def;
- if (insn_contains_asm (insn))
+ if (NONDEBUG_INSN_P (insn) && extract_asm_operands (PATTERN (insn)))
FOR_EACH_INSN_DEF (def, insn)
{
unsigned int dregno = DF_REF_REGNO (def);
