Dan Gohman b9c32f1aca Arithmetic instructions don't set EFLAGS bits OF and CF bits ... the same say the "test" instruction does in overflow cases, so eliminating the test is only safe when those bits aren't needed, as is the case for COND_E and COND_NE, or if it can be proven that no overflow will occur. For now, just restrict the optimization to COND_E and COND_NE and don't do any overflow analysis. llvm-svn: 66318		2009-03-07 01:58:32 +00:00
..
Alpha
ARM	Last commit accidentially deleted this code.	2009-02-28 06:02:14 +00:00
CBackend
CellSPU	Used "-enable-unsafe-fp-math" to allow this transformation - (a * b -c) = c - a *b.	2009-01-31 06:50:54 +00:00
CPP
Generic	bug 3610: Test case.	2009-02-22 15:54:44 +00:00
IA64
Mips
PowerPC	Private linkage support for PPC / Darwin.	2009-01-25 06:32:01 +00:00
SPARC
X86	Arithmetic instructions don't set EFLAGS bits OF and CF bits	2009-03-07 01:58:32 +00:00
XCore