function, and then use it to fix a bug in SplitVectorOp that expected inserts
to always have constant insertion indices.

llvm-svn: 50273

llvm-svn: 50271

llvm-svn: 50267

llvm-svn: 50266

r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.

llvm-svn: 50265

llvm-svn: 50260

- Add comments.

llvm-svn: 50259

On Darwin / Linux x86-32, v8i8, v4i16, v2i32 values are passed in MM[0-2].                                                                                                                                      
On Darwin / Linux x86-32, v1i64 values are passed in memory.                                                                                                                                                    
On Darwin x86-64, v8i8, v4i16, v2i32 values are passed in XMM[0-7].                                                                                                                                     
On Darwin x86-64, v1i64 values are passed in 64-bit GPRs.

llvm-svn: 50257

ConstantExpression GEPs pointing into constant globals.

llvm-svn: 50256

idea what this code (findNonImmUse) does, so I'm only guessing 
that this is the right thing.  It would be really really nice
if this had comments and perhaps switched to SmallPtrSet
(hint hint) :)

This fixes rdar://5886601, a crash on gcc.target/i386/sse4_1-pblendw.c

llvm-svn: 50252

goes back to the block, e.g.:

  Threading edge through bool from 'bb37.us.thread3829' to 'bb37.us' with cost: 1, across block:

bb37.us:		; preds = %bb37.us.thread3829, %bb37.us, %bb33
	%D1361.1.us = phi i32 [ %tmp36, %bb33 ], [ %D1361.1.us, %bb37.us ], [ 0, %bb37.us.thread3829 ]		; <i32> [#uses=2]
	%tmp39.us = icmp eq i32 %D1361.1.us, 0		; <i1> [#uses=1]
	br i1 %tmp39.us, label %bb37.us, label %bb42.us

llvm-svn: 50251

Applying fix by Frits van Bommel.

llvm-svn: 50249

Fix bug in x86 memcpy / memset lowering. If there are trailing bytes not handled by rep instructions, a new memcpy / memset is introduced for them. However, since source / destination addresses are already adjusted, their offsets should be zero.

llvm-svn: 50239

llvm-svn: 50222

- Do not iterate over SmallPtrSet, the order of iteration is not deterministic.

llvm-svn: 50209

llvm-svn: 50203

sccp tracks getresult values, not call values in this
case.

llvm-svn: 50202

llvm-svn: 50201

Fix said code to handle merging return instructions together correctly
when handling multiple return values.

llvm-svn: 50199

llvm-svn: 50196

llvm-svn: 50192

llvm-svn: 50190

llvm-svn: 50189

llvm-svn: 50187

return instrs operands didn't match up with function results.

llvm-svn: 50182

llvm-svn: 50181

llvm-svn: 50180

llvm-svn: 50179

llvm-svn: 50175

llvm-svn: 50174

llvm-svn: 50173

llvm-svn: 50169

llvm-svn: 50168

Be over-conservative: scan for all used virtual registers and calculate maximal stack alignment in assumption, that there will be spill of vector register.

llvm-svn: 50167

llvm-svn: 50166

llvm-svn: 50165

llvm-svn: 50164

llvm-svn: 50163

llvm-svn: 50162

Eastimate required stack alignment early, so we can decide, whether we will need frame pointer or not

llvm-svn: 50161