We don't need to pass to mcount the exact start of the called routine. This
saves
one instruction when long calls are being used.
Tested on hppa-unknown-linux-gnu, hppa2.0w-hp-hpux11.11 and hppa64-hp-hpux11.11.
Committed to trunk, gcc-9 and gcc-8 branches.
Dave
--
John David Anglin dave.ang...@bell.net
2019-05-28 John David Anglin <dang...@gcc.gnu.org>
* config/pa/pa.c (hppa_profile_hook): Remove offset adjustment.
Index: config/pa/pa.c
===================================================================
--- config/pa/pa.c (revision 271614)
+++ config/pa/pa.c (working copy)
@@ -4569,10 +4581,6 @@
void
hppa_profile_hook (int label_no)
{
- /* We use SImode for the address of the function in both 32 and
- 64-bit code to avoid having to provide DImode versions of the
- lcla2 and load_offset_label_address insn patterns. */
- rtx reg = gen_reg_rtx (SImode);
rtx_code_label *label_rtx = gen_label_rtx ();
int reg_parm_stack_space = REG_PARM_STACK_SPACE (NULL_TREE);
rtx arg_bytes, begin_label_rtx, mcount, sym;
@@ -4604,18 +4612,13 @@
if (!use_mcount_pcrel_call)
{
/* The address of the function is loaded into %r25 with an instruction-
- relative sequence that avoids the use of relocations. The sequence
- is split so that the load_offset_label_address instruction can
- occupy the delay slot of the call to _mcount. */
+ relative sequence that avoids the use of relocations. We use SImode
+ for the address of the function in both 32 and 64-bit code to avoid
+ having to provide DImode versions of the lcla2 pattern. */
if (TARGET_PA_20)
- emit_insn (gen_lcla2 (reg, label_rtx));
+ emit_insn (gen_lcla2 (gen_rtx_REG (SImode, 25), label_rtx));
else
- emit_insn (gen_lcla1 (reg, label_rtx));
-
- emit_insn (gen_load_offset_label_address (gen_rtx_REG (SImode, 25),
- reg,
- begin_label_rtx,
- label_rtx));
+ emit_insn (gen_lcla1 (gen_rtx_REG (SImode, 25), label_rtx));
}
if (!NO_DEFERRED_PROFILE_COUNTERS)
