On 04/10/2016 11:24 PM, Zhouyi Zhou wrote:
save a function call to init_reload when using lra, also remove the a
type error in reload1.c
because init_reload is called only once when compile process, the
performance reduction may not be significant when compiling multi function
source files.
Thank you for the patch. The toplev.c part of the patch is ok for stage 1.
As for reload1.c part, I don't see what you actually changed.
performance evaluation using valgrind (gcc.c-torture/compile/simd-6.c):
valgrind --tool=lackey --log-file=tmp1 ../gcc/cc1.orig -O2 simd-6.c
2>/dev/null
valgrind --tool=lackey --log-file=tmp ../gcc/cc1 -O2 simd-6.c 2>/dev/null
orig:
==1139== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
==1139== Command: ../gcc/cc1.orig -O2 simd-6.c
==1139== Parent PID: 14895
==1139==
==1139==
==1139== Counted 1 call to main()
==1139==
==1139== Jccs:
==1139== total: 2,309,094
==1139== taken: 960,254 (42%)
==1139==
==1139== Executed:
==1139== SBs entered: 2,671,880
==1139== SBs completed: 1,662,561
==1139== guest instrs: 15,729,468
==1139== IRStmts: 93,198,764
after:
==1142== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
==1142== Command: ../gcc/cc1 -O2 simd-6.c
==1142== Parent PID: 14895
==1142==
==1142==
==1142== Counted 1 call to main()
==1142==
==1142== Jccs:
==1142== total: 2,306,506
==1142== taken: 959,362 (42%)
==1142==
==1142== Executed:
==1142== SBs entered: 2,669,050
==1142== SBs completed: 1,660,884
==1142== guest instrs: 15,714,064
==1142== IRStmts: 93,106,144
bootstrapped and checked on x86-64
Signed-off-by: Zhouyi Zhou <yizhouz...@ict.ac.cn>
---
gcc/ChangeLog | 9 +++++++++
gcc/reload1.c | 2 +-
gcc/toplev.c | 3 ++-
3 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8d9a94d..9f78348 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2016-04-11 Zhouyi Zhou <yizhouz...@ict.ac.cn>
+
+ * toplev.c (backend_init_target): save a function call to init_reload
+ when using lra.
+
+2016-04-11 Zhouyi Zhou <yizhouz...@ict.ac.cn>
+
+ * reload1.c : fix a type error in reload1.c.
+
2016-04-09 Tom de Vries <t...@codesourcery.com>
PR tree-optimization/68953
diff --git a/gcc/reload1.c b/gcc/reload1.c
index c2800f8..8310dc5 100644
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -412,7 +412,7 @@ static bool gen_reload_chain_without_interm_reg_p (int,
int);
static int reloads_conflict (int, int);
static rtx_insn *gen_reload (rtx, rtx, int, enum reload_type);
static rtx_insn *emit_insn_if_valid_for_reload (rtx);
-
+
/* Initialize the reload pass. This is called at the beginning of compilation
and may be called again if the target is reinitialized. */
diff --git a/gcc/toplev.c b/gcc/toplev.c
index c480bfc..14ac9c5 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -1620,7 +1620,8 @@ backend_init_target (void)
init_alias_target ();
/* Depends on HARD_FRAME_POINTER_REGNUM. */
- init_reload ();
+ if (!ira_use_lra_p)
+ init_reload ();
/* Depends on the enabled attribute. */
recog_init ();
