Identified regression caused by *gcc:392aa7d7adfbd84253121d2ef779bf3c627e8d0b*:
commit 392aa7d7adfbd84253121d2ef779bf3c627e8d0b
Author: Jeff Law <l...@torsion.usersys.redhat.com>
Fix some testsuite failures for H8/SX multilibs where short branches
where used when long branches were necessary.
Results regressed to (for first_bad == 392aa7d7adfbd84253121d2ef779bf3c627e8d0b)
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_abe stage1 -- --set gcc_override_configure=--disable-libsanitizer:
-8
# build_abe linux:
-7
# build_abe glibc:
-6
# build_abe stage2 -- --set gcc_override_configure=--disable-libsanitizer:
-5
# true:
0
# benchmark -- -O3_LTO
artifacts/build-392aa7d7adfbd84253121d2ef779bf3c627e8d0b/results_id:
1
# 456.hmmer,hmmer_base.default regressed by 104
from (for last_good == c7137fcc7cbc1f1f14f9fed75adcc6bd8f1d418c)
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_abe stage1 -- --set gcc_override_configure=--disable-libsanitizer:
-8
# build_abe linux:
-7
# build_abe glibc:
-6
# build_abe stage2 -- --set gcc_override_configure=--disable-libsanitizer:
-5
# true:
0
# benchmark -- -O3_LTO
artifacts/build-c7137fcc7cbc1f1f14f9fed75adcc6bd8f1d418c/results_id:
1
This commit has regressed these CI configurations:
- tcwg_bmk_gnu_tx1/gnu-release-aarch64-spec2k6-O3_LTO
Artifacts of last_good build:
https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-release-aarch64-spec2k6-O3_LTO/42/artifact/artifacts/build-c7137fcc7cbc1f1f14f9fed75adcc6bd8f1d418c/
Artifacts of first_bad build:
https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-release-aarch64-spec2k6-O3_LTO/42/artifact/artifacts/build-392aa7d7adfbd84253121d2ef779bf3c627e8d0b/
Even more details:
https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-release-aarch64-spec2k6-O3_LTO/42/artifact/artifacts/
Reproduce builds:
<cut>
mkdir investigate-gcc-392aa7d7adfbd84253121d2ef779bf3c627e8d0b
cd investigate-gcc-392aa7d7adfbd84253121d2ef779bf3c627e8d0b
# Fetch scripts
git clone https://git.linaro.org/toolchain/jenkins-scripts
# Fetch manifests and test.sh script
mkdir -p artifacts/manifests
curl -o artifacts/manifests/build-baseline.sh
https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-release-aarch64-spec2k6-O3_LTO/42/artifact/artifacts/manifests/build-baseline.sh
--fail
curl -o artifacts/manifests/build-parameters.sh
https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-release-aarch64-spec2k6-O3_LTO/42/artifact/artifacts/manifests/build-parameters.sh
--fail
curl -o artifacts/test.sh
https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-release-aarch64-spec2k6-O3_LTO/42/artifact/artifacts/test.sh
--fail
chmod +x artifacts/test.sh
# Reproduce the baseline build (build all pre-requisites)
./jenkins-scripts/tcwg_bmk-build.sh @@ artifacts/manifests/build-baseline.sh
# Save baseline build state (which is then restored in artifacts/test.sh)
mkdir -p ./bisect
rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/
--exclude /gcc/ ./ ./bisect/baseline/
cd gcc
# Reproduce first_bad build
git checkout --detach 392aa7d7adfbd84253121d2ef779bf3c627e8d0b
../artifacts/test.sh
# Reproduce last_good build
git checkout --detach c7137fcc7cbc1f1f14f9fed75adcc6bd8f1d418c
../artifacts/test.sh
cd ..
</cut>
Full commit (up to 1000 lines):
<cut>
commit 392aa7d7adfbd84253121d2ef779bf3c627e8d0b
Author: Jeff Law <l...@torsion.usersys.redhat.com>
Date: Wed Apr 29 10:19:22 2020 -0400
Fix some testsuite failures for H8/SX multilibs where short branches
where used when long branches were necessary.
* config/h8300/h8300.md (H8/SX div patterns): All H8/SX specific
division instructions are 4 bytes long.
---
gcc/ChangeLog | 5 +++++
gcc/config/h8300/h8300.md | 4 ++--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 80064da83ce..a2d4a1b82f4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2020-04-29 Jeff Law <l...@redhat.com>
+
+ * config/h8300/h8300.md (H8/SX div patterns): All H8/SX specific
+ division instructions are 4 bytes long.
+
2020-04-29 Jakub Jelinek <ja...@redhat.com>
PR target/94826
diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md
index 3e5cdbeeebe..a86b8ea2074 100644
--- a/gcc/config/h8300/h8300.md
+++ b/gcc/config/h8300/h8300.md
@@ -1218,7 +1218,7 @@
(match_operand:HSI 2 "reg_or_nibble_operand" "r IP4>X")))]
"TARGET_H8300SX"
{ return <MODE>mode == HImode ? "divu.w\\t%T2,%T0" : "divu.l\\t%S2,%S0"; }
- [(set_attr "length" "2")])
+ [(set_attr "length" "4")])
(define_insn "div<mode>3"
[(set (match_operand:HSI 0 "register_operand" "=r")
@@ -1226,7 +1226,7 @@
(match_operand:HSI 2 "reg_or_nibble_operand" "r IP4>X")))]
"TARGET_H8300SX"
{ return <MODE>mode == HImode ? "divs.w\\t%T2,%T0" : "divs.l\\t%S2,%S0"; }
- [(set_attr "length" "2")])
+ [(set_attr "length" "4")])
(define_insn "udivmodqi4"
[(set (match_operand:QI 0 "register_operand" "=r")
</cut>
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