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llvm19: permit incremental builds from llvm18

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Detect and delete out of date clang-tblgen produced output.  I found it
sufficent for compilation to delete only arm_*.inc files, but it seems
safer to regenerate all output and a few extra clang-tblgen runs pales
in comparison to the full build we're doing at this point.

Reviewed by:	dim, emaste
Differential Revision:	https://reviews.freebsd.org/D47270

(cherry picked from commit 8b2e7da708)
This commit is contained in:
Brooks Davis 2024-10-23 23:37:28 +01:00 committed by Dimitry Andric
parent 628e76a986
commit 2d7d4c6626
1 changed files with 10 additions and 0 deletions
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10
tools/build/depend-cleanup.sh
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@ -166,3 +166,13 @@ if [ -f "$OBJTOP"/rescue/rescue/rescue.mk ] && \
echo "removing rescue.mk without nvme_util.o"
rm -f "$OBJTOP"/rescue/rescue/rescue.mk
fi
# 20241018 5deeebd8c6ca Merge llvm-project release/19.x llvmorg-19.1.2-0-g7ba7d8e2f7b6
p="$OBJTOP"/lib/clang/libclang/clang/Basic
f="$p"/arm_mve_builtin_sema.inc
if [ -e "$f" ]; then
if grep -q SemaBuiltinConstantArgRange "$f"; then
echo "Removing pre-llvm19 clang-tblgen output"
run rm -f "$p"/*.inc
fi
fi