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arm: Use move-if-change for updating regenerated files [PR93548]

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The t-arm make fragment currently uses 'mv' to update some files that
are automatically regenerated, but this causes problems on read-only
filesystems if the date stamps are incorrect and the files have not
really changed.  So use move-if-change instead.

	PR target/93548
	* config/arm/t-arm: ($(srcdir)/config/arm/arm-tune.md,
	$(srcdir)/config/arm/arm-tables.opt): Use move-if-change.
This commit is contained in:
Richard Earnshaw 2020-02-03 17:40:55 +00:00
parent 591f869ad7
commit 492c63e5b7
2 changed files with 10 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2020-02-03 Richard Earnshaw <rearnsha@arm.com>
PR target/93548
* config/arm/t-arm: ($(srcdir)/config/arm/arm-tune.md)
($(srcdir)/config/arm/arm-tables.opt): Use move-if-change.
2020-02-03 Andrew Stubbs <ams@codesourcery.com>
* config.gcc: Remove "carrizo" support.

6
gcc/config/arm/t-arm
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@ -70,13 +70,15 @@ $(srcdir)/config/arm/arm-tune.md: $(srcdir)/config/arm/parsecpu.awk \
$(srcdir)/config/arm/arm-cpus.in
$(AWK) -f $(srcdir)/config/arm/parsecpu.awk -v cmd=md \
$(srcdir)/config/arm/arm-cpus.in > arm-tune.new
mv arm-tune.new $(srcdir)/config/arm/arm-tune.md
$(srcdir)/../move-if-change arm-tune.new \
$(srcdir)/config/arm/arm-tune.md
$(srcdir)/config/arm/arm-tables.opt: $(srcdir)/config/arm/parsecpu.awk \
$(srcdir)/config/arm/arm-cpus.in
$(AWK) -f $(srcdir)/config/arm/parsecpu.awk -v cmd=opt \
$(srcdir)/config/arm/arm-cpus.in > arm-tables.new
mv arm-tables.new $(srcdir)/config/arm/arm-tables.opt
$(srcdir)/../move-if-change arm-tables.new \
$(srcdir)/config/arm/arm-tables.opt
arm-cpu.h: s-arm-cpu ; @true
s-arm-cpu: $(srcdir)/config/arm/parsecpu.awk \