From: Andi Kleen <a...@linux.intel.com>
-flto-report is useful, but it prints for every LTRANS pass and
is very noisy and the main problem is often in WPA only.
Add a new -flto-report-wpa option that is only printed for WPA.
gcc/:
2013-04-19 Andi Kleen <a...@linux.intel.com>
* common.opt (-flto-report-wpa): Add.
* doc/invoke.texi (-flto-report-wpa): Add.
* lto/lto.c (do_whole_program_analysis): Check for lto-report-wpa.
(lto_main): dito.
---
gcc/common.opt | 4 ++++
gcc/doc/invoke.texi | 6 +++++-
gcc/lto/lto.c | 4 ++--
3 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/gcc/common.opt b/gcc/common.opt
index f0cb9e8..8be32e5 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -1504,6 +1504,10 @@ flto-report
Common Report Var(flag_lto_report) Init(0)
Report various link-time optimization statistics
+flto-report-wpa
+Common Report Var(flag_lto_report_wpa) Init(0)
+Report various link-time optimization statistics for WPA only
+
fmath-errno
Common Report Var(flag_errno_math) Init(1) Optimization SetByCombined
Set errno after built-in math functions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 782b569..034845d 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -379,7 +379,7 @@ Objective-C and Objective-C++ Dialects}.
-fivopts -fkeep-inline-functions -fkeep-static-consts @gol
-floop-block -floop-interchange -floop-strip-mine -floop-nest-optimize @gol
-floop-parallelize-all -flto -flto-compression-level @gol
--flto-partition=@var{alg} -flto-report -fmerge-all-constants @gol
+-flto-partition=@var{alg} -flto-report -flto-report-wpa -fmerge-all-constants
@gol
-fmerge-constants -fmodulo-sched -fmodulo-sched-allow-regmoves @gol
-fmove-loop-invariants fmudflap -fmudflapir -fmudflapth -fno-branch-count-reg
@gol
-fno-default-inline @gol
@@ -8455,6 +8455,10 @@ files in LTO mode (via @option{-flto}).
Disabled by default.
+@item -flto-report-wpa
+Like @option{-flto-report}, but only print for the WPA phase of Link
+Time Optimization.
+
@item -fuse-linker-plugin
Enables the use of a linker plugin during link-time optimization. This
option relies on plugin support in the linker, which is available in gold
diff --git a/gcc/lto/lto.c b/gcc/lto/lto.c
index 4aaf2dc..dbef690 100644
--- a/gcc/lto/lto.c
+++ b/gcc/lto/lto.c
@@ -3287,7 +3287,7 @@ do_whole_program_analysis (void)
}
/* Show the LTO report before launching LTRANS. */
- if (flag_lto_report)
+ if (flag_lto_report || (flag_wpa && flag_lto_report_wpa))
print_lto_report_1 ();
if (mem_report_wpa)
dump_memory_report (true);
@@ -3415,7 +3415,7 @@ lto_main (void)
print_lto_report before launching LTRANS. If LTRANS was
launched directly by the driver we would not need to do
this. */
- if (flag_lto_report)
+ if (flag_lto_report || (flag_wpa && flag_lto_report_wpa))
print_lto_report_1 ();
/* Record the global variables. */
--
1.8.1.4
