diff options
| author | Alexander Popov <alex.popov@linux.com> | 2020-07-10 14:10:16 -0600 |
|---|---|---|
| committer | Jeff Law <law@redhat.com> | 2020-07-10 14:26:05 -0600 |
| commit | 5ada27f8e0ca6e3d780a54fcb92b2ac647d38627 (patch) | |
| tree | 303ad3aba6af52713c15504bd98fead67cdd58e6 | |
| parent | def4c0b47e0af546d1669743286fee3c3f3159d3 (diff) | |
| download | gcc-5ada27f8e0ca6e3d780a54fcb92b2ac647d38627.zip gcc-5ada27f8e0ca6e3d780a54fcb92b2ac647d38627.tar.gz gcc-5ada27f8e0ca6e3d780a54fcb92b2ac647d38627.tar.bz2 | |
Improve shrink wrapping debug output
Currently if requires_stack_frame_p() returns true for some insn, the
shrink-wrapping debug output contains only the number of a block containing
that insn.
But it is very useful to see the particular insn that requires the prologue.
Let's call print_rtl_single to display that insn in the following pass dump.
gcc/
* shrink-wrap.c (try_shrink_wrapping): Improve debug output.
| -rw-r--r-- | gcc/shrink-wrap.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/shrink-wrap.c b/gcc/shrink-wrap.c index 775db9c..d70635e 100644 --- a/gcc/shrink-wrap.c +++ b/gcc/shrink-wrap.c @@ -43,6 +43,7 @@ along with GCC; see the file COPYING3. If not see #include "rtl-iter.h" #include "valtrack.h" #include "function-abi.h" +#include "print-rtl.h" /* Return true if INSN requires the stack frame to be set up. PROLOGUE_USED contains the hard registers used in the function @@ -735,7 +736,11 @@ try_shrink_wrapping (edge *entry_edge, rtx_insn *prologue_seq) set_up_by_prologue.set)) { if (dump_file) - fprintf (dump_file, "Block %d needs the prologue.\n", bb->index); + { + fprintf (dump_file, "Block %d needs prologue due to insn %d:\n", + bb->index, INSN_UID (insn)); + print_rtl_single (dump_file, insn); + } pro = nearest_common_dominator (CDI_DOMINATORS, pro, bb); break; } |