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GSdx: Linux: Fix AVX2 CPU build with TSX disabled 

On Linux, CPUs with AVX2 instruction sets that have TSX disabled (by
microcode update or otherwise) fail to build GSdx. The __RTM__ macro is
undefined, with leads to the TSX RTM instruction set (_xbegin, _xend,
_xabort, etc.) being unavailable.

Modify the preprocessor check so that the RTM instructions are only used
if available.
This commit is contained in:
turtleli 2015-02-12 14:31:12 +00:00 committed by Jonathan Li
parent 56b2c009cd
commit 9b572d2d47
1 changed files with 2 additions and 2 deletions
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4
plugins/GSdx/GSThread.h
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@ -485,7 +485,7 @@ public:
TransactionScope(Lock& fallBackLock_, int max_retries = 3) TransactionScope(Lock& fallBackLock_, int max_retries = 3)
: fallBackLock(fallBackLock_) : fallBackLock(fallBackLock_)
{ {
#if _M_SSE >= 0x501 #if (_M_SSE >= 0x501 && !defined(__GNUC__)) || defined(__RTM__)
int nretries = 0; int nretries = 0;
@ -528,7 +528,7 @@ public:
{ {
fallBackLock.unlock(); fallBackLock.unlock();
} }
#if _M_SSE >= 0x501 #if (_M_SSE >= 0x501 && !defined(__GNUC__)) || defined(__RTM__)
else else
{ {
_xend(); _xend();