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[GOLD] Increase --split-stack-adjust-size

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For functions with small (< 256 bytes) stack frames, the current x86
do_calls_non_split ignores --split-stack-adjust-size and, in
combination with __morestack_non_split, supplies a non-split-stack
function with at least 0x100000 (1M) available stack.  On powerpc64, a
default of 0x4000 is not large enough to reliably work with the golang
testsuite.  This increase the default size to the defacto x86 value.

	* options.h (split_stack_adjust_size): Default to 0x100000.
This commit is contained in:
Alan Modra 2020-10-08 10:27:43 +10:30
parent 467eed626a
commit f9ff65d4df
2 changed files with 5 additions and 1 deletions
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4
gold/ChangeLog
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@ -1,3 +1,7 @@
2020-10-08 Alan Modra <amodra@gmail.com>
* options.h (split_stack_adjust_size): Default to 0x100000.
2020-09-26 Alan Modra <amodra@gmail.com>
* powerpc.cc (Target_powerpc): Rename power10_stubs_ to

2
gold/options.h
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@ -1260,7 +1260,7 @@ class General_options
"output sections"),
N_("(PowerPC only) Each output section has its own stubs"));
DEFINE_uint(split_stack_adjust_size, options::TWO_DASHES, '\0', 0x4000,
DEFINE_uint(split_stack_adjust_size, options::TWO_DASHES, '\0', 0x100000,
N_("Stack size when -fsplit-stack function calls non-split"),
N_("SIZE"));