Chris Lattner 8209f83091 Teach CodeGenPrepare to look through Bitcast instructions when attempting to ... optimize addressing modes. This allows us to optimize things like isel-sink2.ll into: movl 4(%esp), %eax cmpb $0, 4(%eax) jne LBB1_2 ## F LBB1_1: ## TB movl $4, %eax ret LBB1_2: ## F movzbl 7(%eax), %eax ret instead of: _test: movl 4(%esp), %eax cmpb $0, 4(%eax) leal 4(%eax), %eax jne LBB1_2 ## F LBB1_1: ## TB movl $4, %eax ret LBB1_2: ## F movzbl 3(%eax), %eax ret This shrinks (e.g.) 403.gcc from 1133510 to 1128345 lines of .s. Note that the 2008-10-16-SpillerBug.ll testcase is dubious at best, I doubt it is really testing what it thinks it is. llvm-svn: 60068		2008-11-26 00:26:16 +00:00
..
Alpha	Correct some thinkos in the expansion of ADD/SUB	2008-11-12 08:23:26 +00:00
ARM	- Register scavenger should use MachineRegisterInfo and internal map to find the first use of a register after a given machine instruction.	2008-11-20 02:32:35 +00:00
CBackend	Fix PR2907 by digging through constant expressions to find FP constants that	2008-10-22 04:53:16 +00:00
CellSPU	CellSPU:	2008-11-25 17:29:43 +00:00
CPP
Generic	Test add-with-overflow with fast ISel.	2008-11-24 05:23:38 +00:00
IA64
Mips	Fix PR2667: add soft float support for sint_to_fp/uint_to_fp	2008-11-10 17:36:26 +00:00
PowerPC	Remove these, which test for optimizations that	2008-11-17 18:57:45 +00:00
SPARC	Add testcase for 'r' inline asm operand	2008-10-10 20:28:59 +00:00
X86	Teach CodeGenPrepare to look through Bitcast instructions when attempting to	2008-11-26 00:26:16 +00:00
XCore	Reapply r59464, this time using the correct type	2008-11-18 09:15:03 +00:00