Aurelien Jarno 355ed7cd08 tcg: use tcg_debug_assert instead of assert (fix performance regression) ... The TCG code is quite performance sensitive, but at the same time can also be quite tricky. That is why asserts that can be enabled with the --enable-debug-tcg configure option. This used to work the following way: | #include "config.h" | | ... | | #if !defined(CONFIG_DEBUG_TCG) && !defined(NDEBUG) | /* define it to suppress various consistency checks (faster) */ | #define NDEBUG | #endif | | ... | | #include <assert.h> Since commit 757e725b (tcg: Clean up includes) "config.h" as been replaced by "qemu/osdep.h" which itself includes <assert.h>. As a consequence the assertions are always enabled, even when using --disable-debug-tcg, causing a performance regression, especially on targets with many registers. For instance on qemu-system-ppc the speed difference is about 15%. tcg_debug_assert is controlled directly by CONFIG_DEBUG_TCG and already uses in some places. This patch replaces all the calls to assert into calss to tcg_debug_assert. Backports commit eabb7b91b36b202b4dac2df2d59d698e3aff197a from qemu		2018-02-23 13:52:13 -05:00
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tcg-target.h	tcg: add TCG_TARGET_TLB_DISPLACEMENT_BITS	2018-02-13 08:28:29 -05:00
tcg-target.inc.c	tcg: use tcg_debug_assert instead of assert (fix performance regression)	2018-02-23 13:52:13 -05:00