From 193d4c0f78db7d9e50dff16339647bafb76f92a4 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 3 Jun 2010 13:27:49 +0200 Subject: var-tracking.c (dataflow_set_equiv_regs): Shortcut the loop if ... * var-tracking.c (dataflow_set_equiv_regs): Shortcut the loop if set->regs[i] is NULL or has just one entry. From-SVN: r160216 --- gcc/ChangeLog | 8 +++++++- gcc/var-tracking.c | 5 +++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c397c25..8e4aed8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,4 +1,10 @@ 2010-06-03 Jan Hubicka + Jakub Jelinek + + * var-tracking.c (dataflow_set_equiv_regs): Shortcut the loop if + set->regs[i] is NULL or has just one entry. + +2010-06-03 Jan Hubicka * lto-cgraph.c (lto_varpool_encoder_size): Remove. * lto-streamer.h (lto_varpool_encoder_size): New inline function. @@ -546,7 +552,7 @@ * tree-inline.c (estimate_num_insns): For stdarg functions look into call statement to count cost of argument passing. -2010-06-01 Kai Tietz +2010-06-01 Kai Tietz * config/i386.c (ix86_output_addr_vec_elt): Make LPREFIX argument for fprintf. diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c index 9676612..76cd7f8 100644 --- a/gcc/var-tracking.c +++ b/gcc/var-tracking.c @@ -3694,6 +3694,11 @@ dataflow_set_equiv_regs (dataflow_set *set) { rtx canon[NUM_MACHINE_MODES]; + /* If the list is empty or one entry, no need to canonicalize + anything.  */ +  if (set->regs[i] == NULL || set->regs[i]->next == NULL) + continue; + memset (canon, 0, sizeof (canon)); for (list = set->regs[i]; list; list = list->next) -- cgit v1.1