Failure after basepoints/gcc-13-4252-ga03b35a28db: Fix comment typos noticed by Bernhard:

Results changed to
-10
# true:
0
# build_abe binutils:
1
# build_abe bootstrap_O1:
# FAILED
# First few build errors in logs:
# 00:01:22 ../../../../../../gcc/gcc/tree-ssa-dom.cc:680:7: error: expected unqualified-id before ‘=’ token
# 00:01:22 ../../../../../../gcc/gcc/tree-ssa-dom.cc:692:38: error: ‘alternative’ was not declared in this scope
# 00:01:22 make[3]: *** [Makefile:1146: tree-ssa-dom.o] Error 1
# 00:02:21 make[2]: *** [Makefile:4917: all-stage1-gcc] Error 2
# 00:02:21 make[1]: *** [Makefile:25340: stage1-bubble] Error 2
# 00:02:21 make: *** [Makefile:1062: all] Error 2

from
-10
# true:
0
# build_abe binutils:
1
# build_abe bootstrap_O1:
2

THIS IS THE END OF INTERESTING STUFF.  BELOW ARE LINKS TO BUILDS, REPRODUCTION INSTRUCTIONS, AND THE RAW COMMIT.

For latest status see comments in https://linaro.atlassian.net/browse/GNU-692 .
Status of basepoints/gcc-13-4252-ga03b35a28db commit for tcwg_gcc_bootstrap:
commit a03b35a28db262546415e8f16829cbb027a75025
Author: Jeff Law <jlaw@ventanamicro.com>
Date:   Tue Nov 22 16:22:18 2022 -0700

    Fix comment typos noticed by Bernhard
    
    gcc/
            * tree-ssa-dom.cc (record_edge_info): Fix comment typos.
* master-aarch64-bootstrap_O1
** Failure after basepoints/gcc-13-4252-ga03b35a28db: Fix comment typos noticed by Bernhard:
** https://ci.linaro.org/job/tcwg_gcc_bootstrap-build-master-aarch64-bootstrap_O1/510/

Bad  build: https://ci.linaro.org/job/tcwg_gcc_bootstrap-build-master-aarch64-bootstrap_O1/510/artifact/artifacts
Good build: https://ci.linaro.org/job/tcwg_gcc_bootstrap-build-master-aarch64-bootstrap_O1/509/artifact/artifacts

Reproduce current build:
<cut>
mkdir -p investigate-gcc-a03b35a28db262546415e8f16829cbb027a75025
cd investigate-gcc-a03b35a28db262546415e8f16829cbb027a75025

# Fetch scripts
git clone https://git.linaro.org/toolchain/jenkins-scripts

# Fetch manifests for bad and good builds
mkdir -p bad/artifacts good/artifacts
curl -o bad/artifacts/manifest.sh https://ci.linaro.org/job/tcwg_gcc_bootstrap-build-master-aarch64-bootstrap_O1/510/artifact/artifacts/manifest.sh --fail
curl -o good/artifacts/manifest.sh https://ci.linaro.org/job/tcwg_gcc_bootstrap-build-master-aarch64-bootstrap_O1/509/artifact/artifacts/manifest.sh --fail

# Reproduce bad build
(cd bad; ../jenkins-scripts/tcwg_gnu-build.sh ^^ true %%rr[top_artifacts] artifacts)
# Reproduce good build
(cd good; ../jenkins-scripts/tcwg_gnu-build.sh ^^ true %%rr[top_artifacts] artifacts)
</cut>

Full commit (up to 1000 lines):
<cut>
commit a03b35a28db262546415e8f16829cbb027a75025
Author: Jeff Law <jlaw@ventanamicro.com>
Date:   Tue Nov 22 16:22:18 2022 -0700

    Fix comment typos noticed by Bernhard
    
    gcc/
            * tree-ssa-dom.cc (record_edge_info): Fix comment typos.
---
 gcc/tree-ssa-dom.cc | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/gcc/tree-ssa-dom.cc b/gcc/tree-ssa-dom.cc
index c7f095d79fc..e82f4f73a66 100644
--- a/gcc/tree-ssa-dom.cc
+++ b/gcc/tree-ssa-dom.cc
@@ -673,10 +673,10 @@ record_edge_info (basic_block bb)
 		{
 		  /* At this point we know the exit condition is loop
 		     invariant.  The only way to get out of the loop is
-		     if never traverses the backedge to begin with.  This
-		     implies that any PHI nodes create equivalances we can
-		     attach to the loop exit edge.  */
-		  int alternative
+		     if it never traverses the backedge to begin with.  This
+		     implies that any PHI nodes create equivalances that we
+		     can attach to the loop exit edge.  */
+		  int bool
 		    = (EDGE_PRED (bb, 0)->flags & EDGE_DFS_BACK) ? 1 : 0;
 
 		  gphi_iterator gsi;
</cut>