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Author SHA1 Message Date
Hans Wennborg 6596977130 [X86] Enable call frame optimization ("mov to push") not only for optsize (PR26325) 
The size savings are significant, and from what I can tell, both ICC and GCC do this.

Differential Revision: http://reviews.llvm.org/D18573

llvm-svn: 264966
 2016-03-30 23:38:01 +00:00
Dan Gohman 40503396da Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81290
 2009-09-08 23:54:48 +00:00
Evan Cheng 6c94b99c62 For whatever the reason, x86 CallingConv::Fast (i.e. fastcc) was not passing scalar arguments in registers. This patch defines a new fastcc CC which is slightly different from the FastCall CC. In addition to passing integer arguments in ECX and EDX, it also specify doubles are passed in 8-byte slots which are 8-byte aligned (instead of 4-byte aligned). This avoids a potential performance hazard where doubles span cacheline boundaries. 
llvm-svn: 55807
 2008-09-04 22:59:58 +00:00
Evan Cheng fa6b366892 Enable -coalescer-commute-instrs by default. 
llvm-svn: 47623
 2008-02-26 20:40:22 +00:00
Evan Cheng ea8530d82c New tests. 
llvm-svn: 47047
 2008-02-13 03:23:53 +00:00