OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ssa-ccp.c: (optimize_unexecutable_edges): Add note about removal of edge...

Browse Source 
* ssa-ccp.c: (optimize_unexecutable_edges): Add note about removal
        of edge, and removal of phi alternative to dump file.
        (ssa_ccp_substitute_constants): Add note about register now being
        constant, and which uses were replaced in what insns to dump file.

From-SVN: r44042
This commit is contained in:
Daniel Berlin 2001-07-16 16:23:40 +00:00 committed by Jeff Law
parent 55680aef7f
commit 978cf2fcf5
2 changed files with 33 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2001-07-16 Daniel Berlin <dan@cgsoftware.com>
* ssa-ccp.c: (optimize_unexecutable_edges): Add note about removal
of edge, and removal of phi alternative to dump file.
(ssa_ccp_substitute_constants): Add note about register now being
constant, and which uses were replaced in what insns to dump file.
2001-07-16 Andreas Jaeger <aj@suse.de> 2001-07-16 Andreas Jaeger <aj@suse.de>
* gcov.c (output_data): Use HOST_WIDEST_INT_PRINT_DEC to output * gcov.c (output_data): Use HOST_WIDEST_INT_PRINT_DEC to output

34
gcc/ssa-ccp.c
View File

@ -732,10 +732,17 @@ optimize_unexecutable_edges (edges, executable_edges)
while (PHI_NODE_P (insn)) while (PHI_NODE_P (insn))
{ {
remove_phi_alternative (PATTERN (insn), edge->src); remove_phi_alternative (PATTERN (insn), edge->src);
if (rtl_dump_file)
fprintf (rtl_dump_file,
"Removing alternative for bb %d of phi %d\n",
edge->src->index, SSA_NAME (PATTERN (insn)));
insn = NEXT_INSN (insn); insn = NEXT_INSN (insn);
} }
} }
if (rtl_dump_file)
fprintf (rtl_dump_file,
"Removing unexecutable edge from %d to %d\n",
edge->src->index, edge->dest->index);
/* Since the edge was not executable, remove it from the CFG. */ /* Since the edge was not executable, remove it from the CFG. */
remove_edge (edge); remove_edge (edge);
} }
@ -835,6 +842,10 @@ ssa_ccp_substitute_constants ()
are consecutive at the start of the basic block. */ are consecutive at the start of the basic block. */
if (! PHI_NODE_P (def)) if (! PHI_NODE_P (def))
{ {
if (rtl_dump_file)
fprintf (rtl_dump_file,
"Register %d is now set to a constant\n",
SSA_NAME (PATTERN (def)));
SET_SRC (set) = values[i].const_value; SET_SRC (set) = values[i].const_value;
INSN_CODE (def) = -1; INSN_CODE (def) = -1;
df_insn_modify (df_analyzer, BLOCK_FOR_INSN (def), def); df_insn_modify (df_analyzer, BLOCK_FOR_INSN (def), def);
@ -858,15 +869,22 @@ ssa_ccp_substitute_constants ()
&& (GET_CODE (useinsn) == INSN && (GET_CODE (useinsn) == INSN
|| GET_CODE (useinsn) == JUMP_INSN)) || GET_CODE (useinsn) == JUMP_INSN))
{ {
validate_replace_src (regno_reg_rtx [i],
if (validate_replace_src (regno_reg_rtx [i],
values[i].const_value, values[i].const_value,
useinsn); useinsn))
INSN_CODE (useinsn) = -1; {
df_insn_modify (df_analyzer, if (rtl_dump_file)
BLOCK_FOR_INSN (useinsn), fprintf (rtl_dump_file,
useinsn); "Register %d in insn %d replaced with constant\n",
i, INSN_UID (useinsn));
INSN_CODE (useinsn) = -1;
df_insn_modify (df_analyzer,
BLOCK_FOR_INSN (useinsn),
useinsn);
}
} }
} }
} }
} }