2 Commits

Author	SHA1	Message	Date
Evan Cheng	1ce02d180e	Enable machine sinking critical edge splitting. e.g. ... define double @foo(double %x, double %y, i1 %c) nounwind { %a = fdiv double %x, 3.2 %z = select i1 %c, double %a, double %y ret double %z } Was: _foo: divsd LCPI0_0(%rip), %xmm0 testb $1, %dil jne LBB0_2 movaps %xmm1, %xmm0 LBB0_2: ret Now: _foo: testb $1, %dil je LBB0_2 divsd LCPI0_0(%rip), %xmm0 ret LBB0_2: movaps %xmm1, %xmm0 ret This avoids the divsd when early exit is taken. rdar://8454886 llvm-svn: 114372	2010-09-20 22:52:00 +00:00
Dan Gohman	6899a1cd58	Convert comparisons like (x == infinity) to (x >= infinity) on targets ... where FCMP_OEQ is not legal and FCMP_OGE is, such as x86. llvm-svn: 82861	2009-09-26 15:24:17 +00:00