Nate Begeman dc36f47d99 Add support for AssertSext and AssertZext, folding other extensions with ... them. This allows for elminination of redundant extends in the entry blocks of functions on PowerPC. Add support for i32 x i32 -> i64 multiplies, by recognizing when the inputs to ISD::MUL in ExpandOp are actually just extended i32 values and not real i64 values. this allows us to codegen int mulhs(int a, int b) { return ((long long)a * b) >> 32; } as: _mulhs: mulhw r3, r4, r3 blr instead of: _mulhs: mulhwu r2, r4, r3 srawi r5, r3, 31 mullw r5, r4, r5 add r2, r2, r5 srawi r4, r4, 31 mullw r3, r4, r3 add r3, r2, r3 blr with a similar improvement on x86. llvm-svn: 23147		2005-08-30 02:44:00 +00:00
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LegalizeDAG.cpp	Add support for AssertSext and AssertZext, folding other extensions with	2005-08-30 02:44:00 +00:00
Makefile	Change Library Names Not To Conflict With Others When Installed	2004-10-27 23:18:45 +00:00
ScheduleDAG.cpp	Name this variable to be what it really is!	2005-08-30 01:58:51 +00:00
SelectionDAG.cpp	Add support for AssertSext and AssertZext, folding other extensions with	2005-08-30 02:44:00 +00:00
SelectionDAGISel.cpp	Disable this code, which broke many tests last night	2005-08-27 16:16:51 +00:00
SelectionDAGPrinter.cpp	Change ConstantPoolSDNode to actually hold the Constant itself instead of	2005-08-26 17:15:30 +00:00