From c272d6a360d7bb873c18a01c75eda2d63616ee92 Mon Sep 17 00:00:00 2001 From: rakdver Date: Mon, 14 Feb 2005 11:37:52 +0000 Subject: PR target/17428 * cfgrtl.c (safe_insert_insn_on_edge): Avoid extending life range of hard registers. * value-prof.c (insn_prefetch_values_to_profile): Only scan normal insns. * value-prof.c (rtl_find_values_to_profile): Do not look for values to profile in libcalls. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@95007 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/value-prof.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) (limited to 'gcc/value-prof.c') diff --git a/gcc/value-prof.c b/gcc/value-prof.c index 1663e64800d..e5e43206b40 100644 --- a/gcc/value-prof.c +++ b/gcc/value-prof.c @@ -245,7 +245,8 @@ insn_prefetch_values_to_profile (rtx insn, histogram_values *values) int write; histogram_value hist; - if (!INSN_P (insn)) + /* It only makes sense to look for memory references in ordinary insns. */ + if (GET_CODE (insn) != INSN) return false; if (!find_mem_reference (insn, &mem, &write)) @@ -288,13 +289,30 @@ static void rtl_find_values_to_profile (histogram_values *values) { rtx insn; - unsigned i; + unsigned i, libcall_level; life_analysis (NULL, PROP_DEATH_NOTES); *values = VEC_alloc (histogram_value, 0); + libcall_level = 0; for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) - insn_values_to_profile (insn, values); + { + if (find_reg_note (insn, REG_LIBCALL, NULL_RTX)) + libcall_level++; + + /* Do not instrument values inside libcalls (we are going to split block + due to instrumentation, and libcall blocks should be local to a single + basic block). */ + if (!libcall_level) + insn_values_to_profile (insn, values); + + if (find_reg_note (insn, REG_RETVAL, NULL_RTX)) + { + gcc_assert (libcall_level > 0); + libcall_level--; + } + } + gcc_assert (libcall_level == 0); for (i = 0; i < VEC_length (histogram_value, *values); i++) { -- cgit v1.2.1