https://gcc.gnu.org/g:dc1e1b38ce60cd1da781c7dcd97a36add5482a00
commit r15-7175-gdc1e1b38ce60cd1da781c7dcd97a36add5482a00
Author: Richard Biener <rguent...@suse.de>
Date: Fri Jan 24 09:13:17 2025 +0100
tree-optimization/118634 - improve cunroll dump
We no longer subtract the estimated eliminated number of instructions
from the estimated size after unrolling we print - this is a bit
confusing when comparing dumps to previous releases. The following
changes the dump from
Estimated size after unrolling: 42
to
Estimated size after unrolling: 42-12
for the testcase in the PR.
PR tree-optimization/118634
* tree-ssa-loop-ivcanon.cc (try_unroll_loop_completely):
Dump the number of estimated eliminated insns.
Diff:
---
gcc/tree-ssa-loop-ivcanon.cc | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/gcc/tree-ssa-loop-ivcanon.cc b/gcc/tree-ssa-loop-ivcanon.cc
index d07b3d593f59..ca6295c7de2f 100644
--- a/gcc/tree-ssa-loop-ivcanon.cc
+++ b/gcc/tree-ssa-loop-ivcanon.cc
@@ -855,8 +855,8 @@ try_unroll_loop_completely (class loop *loop,
if (dump_file && (dump_flags & TDF_DETAILS))
{
fprintf (dump_file, " Loop size: %d\n", (int) ninsns);
- fprintf (dump_file, " Estimated size after unrolling: %d\n",
- (int) unr_insns);
+ fprintf (dump_file, " Estimated size after unrolling: %d-%d\n",
+ (int) unr_insns, (int) est_eliminated);
}
/* If the code is going to shrink, we don't need to be extra
