Chris Lattner de1c3605a6 Add a couple dag combines to transform mulhi/mullo into a wider multiply ... when the wider type is legal. This allows us to compile: define zeroext i16 @test1(i16 zeroext %x) nounwind { entry: %div = udiv i16 %x, 33 ret i16 %div } into: test1: # @test1 movzwl 4(%esp), %eax imull $63551, %eax, %eax # imm = 0xF83F shrl $21, %eax ret instead of: test1: # @test1 movw $-1985, %ax # imm = 0xFFFFFFFFFFFFF83F mulw 4(%esp) andl $65504, %edx # imm = 0xFFE0 movl %edx, %eax shrl $5, %eax ret Implementing rdar://8760399 and example #4 from: http://blog.regehr.org/archives/320 We should implement the same thing for [su]mul_hilo, but I don't have immediate plans to do this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121696 91177308-0d34-0410-b5e6-96231b3b80d8		2010-12-13 08:39:01 +00:00
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Alpha	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
ARM	(or (and (shl A, #shamt), mask), B) => ARMbfi B, A, ~mask where lsb(mask) == #shamt. rdar://8752056	2010-12-11 04:11:38 +00:00
Blackfin	Remove TargetInstrInfo::copyRegToReg entirely.	2010-07-11 17:01:17 +00:00
CBackend
CellSPU	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
CPP
Generic	Removing the useless test that I added recently. It was meant as an example, but not complicated enough to merit another test.	2010-11-20 07:26:51 +00:00
MBlaze	Missed some ADDI <-> ADDIK conversions in 121649.	2010-12-12 22:53:14 +00:00
Mips	Add ROTR and ROTRV mips32 instructions. Patch by Akira Hatanaka	2010-12-09 17:32:30 +00:00
MSP430	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
PowerPC	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
PTX	ptx: add shift instructions	2010-12-06 04:00:03 +00:00
SPARC	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
SystemZ	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
Thumb	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
Thumb2	(or (and (shl A, #shamt), mask), B) => ARMbfi B, A, ~mask where lsb(mask) == #shamt. rdar://8752056	2010-12-11 04:11:38 +00:00
X86	Add a couple dag combines to transform mulhi/mullo into a wider multiply	2010-12-13 08:39:01 +00:00
XCore	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
thumb2-mul.ll	Enable target-specific mul-lowering on ARM, even at -Os. Remove a test that this makes	2010-09-21 22:51:46 +00:00