Loop::hasLoopInvariantOperands method. Remove
a useless and confusing Loop::isLoopInvariant(Instruction)
method, which didn't do what you thought it did.

No functionality change.

llvm-svn: 113133

llvm-svn: 113123

pattern, so there is no need to define a matching function.

llvm-svn: 113122

llvm-svn: 113121

llvm-svn: 113120

llvm-svn: 113119

llvm-svn: 113118

llvm-svn: 113117

llvm-svn: 113116

llvm-svn: 113115

llvm-svn: 113114

llvm-svn: 113113

llvm-svn: 113109

llvm-svn: 113108

llvm-svn: 113106

This reduces malloc traffic (yay!) and removes MergeFunctionsEqualityInfo.

llvm-svn: 113105

strong functions first to make sure they're the canonical definitions and then
do a second pass looking only for weak functions.

llvm-svn: 113104

Since mem2reg isn't run at -O0, we get a ton of reloads from the stack,
for example, before, this code:

int foo(int x, int y, int z) {
  return x+y+z;
}

used to compile into:

_foo:                                   ## @foo
	subq	$12, %rsp
	movl	%edi, 8(%rsp)
	movl	%esi, 4(%rsp)
	movl	%edx, (%rsp)
	movl	8(%rsp), %edx
	movl	4(%rsp), %esi
	addl	%edx, %esi
	movl	(%rsp), %edx
	addl	%esi, %edx
	movl	%edx, %eax
	addq	$12, %rsp
	ret

Now we produce:

_foo:                                   ## @foo
	subq	$12, %rsp
	movl	%edi, 8(%rsp)
	movl	%esi, 4(%rsp)
	movl	%edx, (%rsp)
	movl	8(%rsp), %edx
	addl	4(%rsp), %edx    ## Folded load
	addl	(%rsp), %edx     ## Folded load
	movl	%edx, %eax
	addq	$12, %rsp
	ret

Fewer instructions and less register use = faster compiles.

llvm-svn: 113102

Clobber ranges are no longer used when joining physical registers.
Instead, all aliases are checked for interference.

llvm-svn: 113084

that diagnose invalid references to references.

llvm-svn: 113078

llvm-svn: 113077

llvm-svn: 113075

llvm-svn: 113073

not SelectAddr

llvm-svn: 113072

llvm-svn: 113071

llvm-svn: 113059

llvm-svn: 113058

into an inner loop, as the new loop iteration may differ substantially.
This fixes PR8078.

llvm-svn: 113057

llvm-svn: 113056

llvm-svn: 113055

llvm-svn: 113050

llvm-svn: 113048

llvm-svn: 113047

llvm-svn: 113045

llvm-svn: 113044

llvm-svn: 113043

location is being re-stored to the memory location.  We would get
a dangling pointer from the SSAUpdate data structure and miss a 
use.  This fixes PR8068

llvm-svn: 113042

llvm-svn: 113035

llvm-svn: 113034

checking each standalone condition and decide whether emit target
specific nodes or remove the condition if it's already matched before.

llvm-svn: 113031