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riscv-gcc-1
Commit 0826f1d8 by Jeffrey A Law Committed by Jeff Law
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toplev.c (dump_file_index): Move SSA dumps just after first jump dump. 

       * toplev.c (dump_file_index): Move SSA dumps just after first
        jump dump.
        (dump_file): Corresponding changes.
        (rest_of_compilation): Move SSA path to just after the first
        jump pass.
        * doc/gcc.texi (Passes): Update due to movement of SSA path.
        * doc/invoke.texi: Update dump file #s as they were completely
        out of date with reality.

From-SVN: r43704
parent 918a6124
Showing with 117 additions and 97 deletions
gcc/ChangeLog
Mon Jul 2 14:20:13 2001 Jeffrey A Law (law@cygnus.com)
* toplev.c (dump_file_index): Move SSA dumps just after first
jump dump.
(dump_file): Corresponding changes.
(rest_of_compilation): Move SSA path to just after the first
jump pass.
* doc/gcc.texi (Passes): Update due to movement of SSA path.
* doc/invoke.texi: Update dump file #s as they were completely
out of date with reality.
2001-07-02 Geoffrey Keating <geoffk@redhat.com> 2001-07-02 Geoffrey Keating <geoffk@redhat.com>
* doc/tm.texi (Frame Layout): Document STACK_PUSH_CODE. * doc/tm.texi (Frame Layout): Document STACK_PUSH_CODE.
......
gcc/doc/gcc.texi
...@@ -3372,6 +3372,7 @@ The option @option{-dj} causes a debugging dump of the RTL code after ...@@ -3372,6 +3372,7 @@ The option @option{-dj} causes a debugging dump of the RTL code after
this pass is run for the first time. This dump file's name is made by this pass is run for the first time. This dump file's name is made by
appending @samp{.jump} to the input file name. appending @samp{.jump} to the input file name.
@cindex register use analysis @cindex register use analysis
@item @item
Register scan. This pass finds the first and last use of each Register scan. This pass finds the first and last use of each
...@@ -3387,20 +3388,6 @@ the second conditional test. The source code for this pass is in ...@@ -3387,20 +3388,6 @@ the second conditional test. The source code for this pass is in
@file{jump.c}. This optimization is only performed if @file{jump.c}. This optimization is only performed if
@option{-fthread-jumps} is enabled. @option{-fthread-jumps} is enabled.
@cindex common subexpression elimination
@cindex constant propagation
@item
Common subexpression elimination. This pass also does constant
propagation. Its source files are @file{cse.c}, and @file{cselib.c}.
If constant propagation causes conditional jumps to become
unconditional or to become no-ops, jump optimization is run again when
CSE is finished.
@opindex ds
The option @option{-ds} causes a debugging dump of the RTL code after
this pass. This dump file's name is made by appending @samp{.cse} to
the input file name.
@cindex SSA optimizations @cindex SSA optimizations
@cindex Single Static Assignment optimizations @cindex Single Static Assignment optimizations
@opindex fssa @opindex fssa
...@@ -3435,6 +3422,21 @@ The option @option{-dX} causes a debugging dump of the RTL code after ...@@ -3435,6 +3422,21 @@ The option @option{-dX} causes a debugging dump of the RTL code after
this pass. This dump file's name is made by appending @samp{.ssadce} to this pass. This dump file's name is made by appending @samp{.ssadce} to
the input file name. the input file name.
@end itemize @end itemize
@cindex common subexpression elimination
@cindex constant propagation
@item
Common subexpression elimination. This pass also does constant
propagation. Its source files are @file{cse.c}, and @file{cselib.c}.
If constant propagation causes conditional jumps to become
unconditional or to become no-ops, jump optimization is run again when
CSE is finished.
@opindex ds
The option @option{-ds} causes a debugging dump of the RTL code after
this pass. This dump file's name is made by appending @samp{.cse} to
the input file name.
@cindex global common subexpression elimination @cindex global common subexpression elimination
@cindex constant propagation @cindex constant propagation
@cindex copy propagation @cindex copy propagation
......
gcc/doc/invoke.texi
...@@ -2856,101 +2856,105 @@ Here are the possible letters for use in @var{letters}, and their meanings: ...@@ -2856,101 +2856,105 @@ Here are the possible letters for use in @var{letters}, and their meanings:
Annotate the assembler output with miscellaneous debugging information. Annotate the assembler output with miscellaneous debugging information.
@item b @item b
@opindex db @opindex db
Dump after computing branch probabilities, to @file{@var{file}.11.bp}. Dump after computing branch probabilities, to @file{@var{file}.13.bp}.
@item B @item B
@opindex dB @opindex dB
Dump after block reordering, to @file{@var{file}.26.bbro}. Dump after block reordering, to @file{@var{file}.27.bbro}.
@item c @item c
@opindex dc @opindex dc
Dump after instruction combination, to the file @file{@var{file}.14.combine}. Dump after instruction combination, to the file @file{@var{file}.15.combine}.
@item C @item C
@opindex dC @opindex dC
Dump after the first if conversion, to the file @file{@var{file}.15.ce}. Dump after the first if conversion, to the file @file{@var{file}.16.ce}.
@item d @item d
@opindex dd @opindex dd
Dump after delayed branch scheduling, to @file{@var{file}.29.dbr}. Dump after delayed branch scheduling, to @file{@var{file}.30.dbr}.
@item D @item D
@opindex dD @opindex dD
Dump all macro definitions, at the end of preprocessing, in addition to Dump all macro definitions, at the end of preprocessing, in addition to
normal output. normal output.
@item e @item e
@opindex de @opindex de
Dump after SSA optimizations, to @file{@var{file}.05.ssa} and Dump after SSA optimizations, to @file{@var{file}.04.ssa} and
@file{@var{file}.06.ussa}. @file{@var{file}.06.ussa}.
@item E @item E
@opindex dE @opindex dE
Dump after the second if conversion, to @file{@var{file}.24.ce2}. Dump after the second if conversion, to @file{@var{file}.25.ce2}.
@item f @item f
@opindex df @opindex df
Dump after life analysis, to @file{@var{file}.13.life}. Dump after life analysis, to @file{@var{file}.14.life}.
@item F @item F
@opindex dF @opindex dF
Dump after purging @code{ADDRESSOF} codes, to @file{@var{file}.04.addressof}. Dump after purging @code{ADDRESSOF} codes, to @file{@var{file}.08.addressof}.
@item g @item g
@opindex dg @opindex dg
Dump after global register allocation, to @file{@var{file}.19.greg}. Dump after global register allocation, to @file{@var{file}.20.greg}.
@item h
@opindex dh
Dump after finalization of EH handling code, to @file{@var{file}.02.eh}.
@item o
@item o @item o
@opindex do @opindex do
Dump after post-reload CSE and other optimizations, to @file{@var{file}.20.postreload}. Dump after post-reload CSE and other optimizations, to @file{@var{file}.21.postreload}.
@item G @item G
@opindex dG @opindex dG
Dump after GCSE, to @file{@var{file}.08.gcse}. Dump after GCSE, to @file{@var{file}.09.gcse}.
@item i @item i
@opindex di @opindex di
Dump after sibling call optimizations, to @file{@var{file}.01.sibling}. Dump after sibling call optimizations, to @file{@var{file}.01.sibling}.
@item j @item j
@opindex dj @opindex dj
Dump after the first jump optimization, to @file{@var{file}.02.jump}. Dump after the first jump optimization, to @file{@var{file}.03.jump}.
@item J @item J
@opindex dJ @opindex dJ
Dump after the last jump optimization, to @file{@var{file}.27.jump2}. Dump after the last jump optimization, to @file{@var{file}.28.jump2}.
@item k @item k
@opindex dk @opindex dk
Dump after conversion from registers to stack, to @file{@var{file}.29.stack}. Dump after conversion from registers to stack, to @file{@var{file}.31.stack}.
@item l @item l
@opindex dl @opindex dl
Dump after local register allocation, to @file{@var{file}.18.lreg}. Dump after local register allocation, to @file{@var{file}.19.lreg}.
@item L @item L
@opindex dL @opindex dL
Dump after loop optimization, to @file{@var{file}.09.loop}. Dump after loop optimization, to @file{@var{file}.10.loop}.
@item M @item M
@opindex dM @opindex dM
Dump after performing the machine dependent reorganisation pass, to Dump after performing the machine dependent reorganisation pass, to
@file{@var{file}.28.mach}. @file{@var{file}.29.mach}.
@item n @item n
@opindex dn @opindex dn
Dump after register renumbering, to @file{@var{file}.23.rnreg}. Dump after register renumbering, to @file{@var{file}.24.rnreg}.
@item N @item N
@opindex dN @opindex dN
Dump after the register move pass, to @file{@var{file}.16.regmove}. Dump after the register move pass, to @file{@var{file}.17.regmove}.
@item r @item r
@opindex dr @opindex dr
Dump after RTL generation, to @file{@var{file}.00.rtl}. Dump after RTL generation, to @file{@var{file}.00.rtl}.
@item R @item R
@opindex dR @opindex dR
Dump after the second instruction scheduling pass, to Dump after the second instruction scheduling pass, to
@file{@var{file}.25.sched2}. @file{@var{file}.26.sched2}.
@item s @item s
@opindex ds @opindex ds
Dump after CSE (including the jump optimization that sometimes follows Dump after CSE (including the jump optimization that sometimes follows
CSE), to @file{@var{file}.03.cse}. CSE), to @file{@var{file}.07.cse}.
@item S @item S
@opindex dS @opindex dS
Dump after the first instruction scheduling pass, to Dump after the first instruction scheduling pass, to
@file{@var{file}.17.sched}. @file{@var{file}.18.sched}.
@item t @item t
@opindex dt @opindex dt
Dump after the second CSE pass (including the jump optimization that Dump after the second CSE pass (including the jump optimization that
sometimes follows CSE), to @file{@var{file}.10.cse2}. sometimes follows CSE), to @file{@var{file}.11.cse2}.
@item w @item w
@opindex dw @opindex dw
Dump after the second flow pass, to @file{@var{file}.21.flow2}. Dump after the second flow pass, to @file{@var{file}.22.flow2}.
@item X @item X
@opindex dX @opindex dX
Dump after SSA aggressive dead code elimination, to @file{@var{file}.06.ssadce}. Dump after SSA aggressive dead code elimination, to @file{@var{file}.05.ssadce}.
@item z @item z
@opindex dz @opindex dz
Dump after the peephole pass, to @file{@var{file}.22.peephole2}. Dump after the peephole pass, to @file{@var{file}.23.peephole2}.
@item a @item a
@opindex da @opindex da
Produce all the dumps listed above. Produce all the dumps listed above.
......
gcc/toplev.c
...@@ -253,11 +253,11 @@ enum dump_file_index ...@@ -253,11 +253,11 @@ enum dump_file_index
DFI_sibling, DFI_sibling,
DFI_eh, DFI_eh,
DFI_jump, DFI_jump,
DFI_cse,
DFI_addressof,
DFI_ssa, DFI_ssa,
DFI_ssa_dce, DFI_ssa_dce,
DFI_ussa, DFI_ussa,
DFI_cse,
DFI_addressof,
DFI_gcse, DFI_gcse,
DFI_loop, DFI_loop,
DFI_cse2, DFI_cse2,
...@@ -299,11 +299,11 @@ struct dump_file_info dump_file[DFI_MAX] = ...@@ -299,11 +299,11 @@ struct dump_file_info dump_file[DFI_MAX] =
{ "sibling", 'i', 0, 0, 0 }, { "sibling", 'i', 0, 0, 0 },
{ "eh", 'h', 0, 0, 0 }, { "eh", 'h', 0, 0, 0 },
{ "jump", 'j', 0, 0, 0 }, { "jump", 'j', 0, 0, 0 },
{ "cse", 's', 0, 0, 0 },
{ "addressof", 'F', 0, 0, 0 },
{ "ssa", 'e', 1, 0, 0 }, { "ssa", 'e', 1, 0, 0 },
{ "ssadce", 'X', 1, 0, 0 }, { "ssadce", 'X', 1, 0, 0 },
{ "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */ { "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */
{ "cse", 's', 0, 0, 0 },
{ "addressof", 'F', 0, 0, 0 },
{ "gcse", 'G', 1, 0, 0 }, { "gcse", 'G', 1, 0, 0 },
{ "loop", 'L', 1, 0, 0 }, { "loop", 'L', 1, 0, 0 },
{ "cse2", 't', 1, 0, 0 }, { "cse2", 't', 1, 0, 0 },
...@@ -2947,6 +2947,61 @@ rest_of_compilation (decl) ...@@ -2947,6 +2947,61 @@ rest_of_compilation (decl)
goto exit_rest_of_compilation; goto exit_rest_of_compilation;
} }
/* Long term, this should probably move before the jump optimizer too,
but I didn't want to disturb the rtl_dump_and_exit and related
stuff at this time. */
if (optimize > 0 && flag_ssa)
{
/* Convert to SSA form. */
timevar_push (TV_TO_SSA);
open_dump_file (DFI_ssa, decl);
find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
cleanup_cfg ();
convert_to_ssa ();
close_dump_file (DFI_ssa, print_rtl_with_bb, insns);
timevar_pop (TV_TO_SSA);
/* The SSA implementation uses basic block numbers in its phi
nodes. Thus, changing the control-flow graph or the basic
blocks, e.g., calling find_basic_blocks () or cleanup_cfg (),
may cause problems. */
if (flag_ssa_dce)
{
/* Remove dead code. */
timevar_push (TV_SSA_DCE);
open_dump_file (DFI_ssa_dce, decl);
insns = get_insns ();
ssa_eliminate_dead_code();
close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns);
timevar_pop (TV_SSA_DCE);
}
/* Convert from SSA form. */
timevar_push (TV_FROM_SSA);
open_dump_file (DFI_ussa, decl);
convert_from_ssa ();
/* New registers have been created. Rescan their usage. */
reg_scan (insns, max_reg_num (), 1);
/* Life analysis used in SSA adds log_links but these
shouldn't be there until the flow stage, so clear
them away. */
clear_log_links (insns);
close_dump_file (DFI_ussa, print_rtl_with_bb, insns);
timevar_pop (TV_FROM_SSA);
ggc_collect ();
}
timevar_push (TV_JUMP); timevar_push (TV_JUMP);
if (optimize > 0) if (optimize > 0)
...@@ -3045,58 +3100,6 @@ rest_of_compilation (decl) ...@@ -3045,58 +3100,6 @@ rest_of_compilation (decl)
ggc_collect (); ggc_collect ();
if (optimize > 0 && flag_ssa)
{
/* Convert to SSA form. */
timevar_push (TV_TO_SSA);
open_dump_file (DFI_ssa, decl);
find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
cleanup_cfg ();
convert_to_ssa ();
close_dump_file (DFI_ssa, print_rtl_with_bb, insns);
timevar_pop (TV_TO_SSA);
/* The SSA implementation uses basic block numbers in its phi
nodes. Thus, changing the control-flow graph or the basic
blocks, e.g., calling find_basic_blocks () or cleanup_cfg (),
may cause problems. */
if (flag_ssa_dce)
{
/* Remove dead code. */
timevar_push (TV_SSA_DCE);
open_dump_file (DFI_ssa_dce, decl);
insns = get_insns ();
ssa_eliminate_dead_code();
close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns);
timevar_pop (TV_SSA_DCE);
}
/* Convert from SSA form. */
timevar_push (TV_FROM_SSA);
open_dump_file (DFI_ussa, decl);
convert_from_ssa ();
/* New registers have been created. Rescan their usage. */
reg_scan (insns, max_reg_num (), 1);
/* Life analysis used in SSA adds log_links but these
shouldn't be there until the flow stage, so clear
them away. */
clear_log_links (insns);
close_dump_file (DFI_ussa, print_rtl_with_bb, insns);
timevar_pop (TV_FROM_SSA);
ggc_collect ();
}
/* Perform global cse. */ /* Perform global cse. */
if (optimize > 0 && flag_gcse) if (optimize > 0 && flag_gcse)
......
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