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| author | Peter Varga <pvarga@inf.u-szeged.hu> | 2013-06-25 15:53:03 +0200 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-06-26 17:17:23 +0200 |
| commit | ca1ac7634f00b845ded92b5fabfa0d1c53197b01 (patch) | |
| tree | 5c9bac8addacbdd696c4a5255976449cf3496940 | |
| parent | 7d469e82e274d334c7d03d81b10d225c59d30798 (diff) | |
| download | qtjsbackend-ca1ac7634f00b845ded92b5fabfa0d1c53197b01.tar.gz | |
[V8] Fix stack alignment corruption for MinGW32 buildv5.1.0-rc2v5.1.0
BUG: https://bugreports.qt-project.org/browse/QTBUG-31396
Change-Id: If9b236f24ed82f4b6b19a2af938b422c68e5eab8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
(cherry picked from commit 91f936a862644c7ca7a1762ad05cc91d263b808e)
Reviewed-by: Peter Varga <pvarga@inf.u-szeged.hu>
Reviewed-by: Liang Qi <liang.qi@digia.com>
| -rw-r--r-- | src/3rdparty/v8/src/platform-win32.cc | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/3rdparty/v8/src/platform-win32.cc b/src/3rdparty/v8/src/platform-win32.cc index 76e35f5..ae9ab2a 100644 --- a/src/3rdparty/v8/src/platform-win32.cc +++ b/src/3rdparty/v8/src/platform-win32.cc @@ -1523,9 +1523,12 @@ double OS::nan_value() { int OS::ActivationFrameAlignment() { #ifdef _WIN64 return 16; // Windows 64-bit ABI requires the stack to be 16-byte aligned. -#else - return 8; // Floating-point math runs faster with 8-byte alignment. +#elif defined(__MINGW32__) + // With gcc 4.4 the tree vectorization optimizer can generate code + // that requires 16 byte alignment such as movdqa on x86. + return 16; #endif + return 8; // Floating-point math runs faster with 8-byte alignment. } |