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authorStefan Liebler <stli@linux.vnet.ibm.com>2018-04-19 12:32:50 +0200
committerStefan Liebler <stli@linux.vnet.ibm.com>2018-04-19 12:32:50 +0200
commitda796524f8d64df3113e3c538adf285cf3ba041c (patch)
treecdd001a99d94653ed07ea79d5144ddd5a4e5f730 /math/libm-test-llround.inc
parentf55a4fdefb00837f2e2a77c04792e69e888ead3e (diff)
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Use volatile global counters in test-tgmath.c.
If build with -Os on s390x, the test-tgmath fails with:
float functions not called often enough (-10000)

Within compile_testf(), the counter (count_float) is saved
before the complex functions are called.
Afterwards the saved counter differs to the current-counter.

But the tests with the complex functions do not increment count_float!
Instead count_float is saved to a register before calling totalorder
and totalordermag which both increment count_float.
The compiler is allowed to do that as totalorderf and totalordermagf
is declared with __attribute__ ((__const__)) in math/bits/mathcalls.h.

Thus this patch adjusts the global counters to be volatile.
Then count_float is saved after totalordermag.

ChangeLog:

	* math/test-tgmath.c (count_double, count_float,
	count_ldouble, count_cdouble, count_cfloat,
	count_cldouble): Use volatile int.
Diffstat (limited to 'math/libm-test-llround.inc')
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