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| author | Richard Henderson | 2018-05-08 21:18:59 +0200 |
|---|---|---|
| committer | Richard Henderson | 2018-05-09 17:30:57 +0200 |
| commit | abebf92597186be2bc48d487235da28b1127860f (patch) | |
| tree | cdc6b67dca81418f7e9ab2a67b8896676e655bb4 /include/exec | |
| parent | tcg/i386: Fix dup_vec in non-AVX2 codepath (diff) | |
| download | qemu-abebf92597186be2bc48d487235da28b1127860f.tar.gz qemu-abebf92597186be2bc48d487235da28b1127860f.tar.xz qemu-abebf92597186be2bc48d487235da28b1127860f.zip | |
tcg: Limit the number of ops in a TB
In 6001f7729e12 we partially attempt to address the branch
displacement overflow caused by 15fa08f845.
However, gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vqtbX.c
is a testcase that contains a TB so large as to overflow anyway.
The limit here of 8000 ops produces a maximum output TB size of
24112 bytes on a ppc64le host with that test case. This is still
much less than the maximum forward branch distance of 32764 bytes.
Cc: qemu-stable@nongnu.org
Fixes: 15fa08f845 ("tcg: Dynamically allocate TCGOps")
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/exec')
0 files changed, 0 insertions, 0 deletions