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[Darwin, PPC, libgcc] Ensure unwinder is built with altivec enabled.

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Fix bootstrap fail when building for 10.4.

When libgcc is built on Darwin, it is usually built for the earliest potential
target (Darwin8, 10.4). Build for that revision default to assuming that the
processor might be G3 (without vector ops) and there is an outlined function
used for save/restore that checks whether the processor is G3 or G4+ at run-
time. However, the unwinder itself needs to be built with the assumption of
vector usage so that the relevant outlined functions are called.

2019-09-04  Iain Sandoe  <iain@sandoe.co.uk>

	Backport from mainline.
	2019-06-06  Iain Sandoe  <iain@sandoe.co.uk>

	* config/rs6000/t-darwin: Ensure that the unwinder is built with
	altivec enabled.

From-SVN: r275383
This commit is contained in:
Iain Sandoe 2019-09-04 19:21:07 +00:00 committed by Iain Sandoe
parent c5a0440d8f
commit ff2eece548
2 changed files with 11 additions and 0 deletions
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8
libgcc/ChangeLog
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@ -1,3 +1,11 @@
2019-09-04 Iain Sandoe <iain@sandoe.co.uk>
Backport from mainline.
2019-06-06 Iain Sandoe <iain@sandoe.co.uk>
* config/rs6000/t-darwin: Ensure that the unwinder is built with
altivec enabled.
2019-09-03 Iain Sandoe <iain@sandoe.co.uk>
Backport from mainline.

3
libgcc/config/rs6000/t-darwin
View File

@ -20,4 +20,7 @@ LIB2ADD_ST = \
# earlier OSX versions.
HOST_LIBGCC2_CFLAGS += -Wa,-force_cpusubtype_ALL -mmacosx-version-min=10.4
unwind-dw2_s.o: HOST_LIBGCC2_CFLAGS += -maltivec
unwind-dw2.o: HOST_LIBGCC2_CFLAGS += -maltivec
LIB2ADDEH += $(srcdir)/config/rs6000/darwin-fallback.c