Reversing the operands allows us to fold, but doesn't force us to. Also, at
this point the DAG is still being optimized, so the check for hasOneUse is not
very precise.

llvm-svn: 124773

prefix would be misinterpreted in some cases on 32-bit
x86 platforms.  Thanks to Olivier Meurant for identifying
the bug.

llvm-svn: 124709

llvm-svn: 124652

llvm-svn: 124639

llvm-svn: 124611

[AVX] Clean up the code to configure target lowering for AVX.  Specify
how to lower more/new operations.  This is a prerequisite for adding
additional AVX lowering.

llvm-svn: 124447

Create override of this method in X86/ARM/MBlaze.

llvm-svn: 124378

CALL64 marks %xmm* as dead.

llvm-svn: 124354

[AVX] Add INSERT_SUBVECTOR and support it on x86.  This provides a
default implementation for x86, going through the stack in a similr
fashion to how the codegen implements BUILD_VECTOR.  Eventually this
will get matched to VINSERTF128 if AVX is available.

llvm-svn: 124307

[AVX] Support EXTRACT_SUBVECTOR on x86.  This provides a default
implementation of EXTRACT_SUBVECTOR for x86, going through the stack
in a similr fashion to how the codegen implements BUILD_VECTOR.
Eventually this will get matched to VEXTRACTF128 if AVX is available.

llvm-svn: 124292

llvm-svn: 124272

llvm-svn: 124270

llvm-svn: 124268

llvm-svn: 124267

llvm-svn: 124102

llvm-svn: 124077

clang's -Wuninitialized-experimental warning.
While these don't look like real bugs, clang's
-Wuninitialized-experimental analysis is stricter
than GCC's, and these fixes have the benefit
of being general nice cleanups.

llvm-svn: 124073

llvm-svn: 124056

llvm-svn: 124054

the flags.

llvm-svn: 123712

llvm-svn: 123670

into and/shift would cause nodes to move around and a dangling pointer
to happen.  The code tried to avoid this with a HandleSDNode, but 
got the details wrong.

llvm-svn: 123578

llvm-svn: 123560

multi-instruction sequences like calls.  Many thanks to Jakob for
finding a testcase.

llvm-svn: 123559

declaration and its assignments.

Found by clang static analyzer.

llvm-svn: 123486

Add a possibility to switch between CFI directives- and table-based frame description emission. Currently all the backends use table-based stuff.

llvm-svn: 123476

llvm-svn: 123475

llvm-gcc-i386-linux-selfhost buildbot heartburn...

llvm-svn: 123431

llvm-svn: 123427

llvm-svn: 123422

after sext's generated for addressing that got folded.  Previously we compiled
test5 into:

_test5:                                 ## @test5
## BB#0:
        movq    -8(%rsp), %rax          ## 8-byte Reload
        movq    (%rdi,%rax), %rdi
        addq    %rdx, %rdi
        movslq  %esi, %rax
        movq    %rax, -8(%rsp)          ## 8-byte Spill
        movq    %rdi, %rax
        ret

which is insane and wrong.  Now we produce:

_test5:                                 ## @test5
## BB#0:
	movslq	%esi, %rax
	movq	(%rdi,%rax), %rax
	addq	%rdx, %rax
	ret

llvm-svn: 123414

llvm-svn: 123408

llvm-svn: 123399

16 bytes for PR8969. Update all testcases accordingly.

llvm-svn: 123367

llvm-svn: 123242

llvm-svn: 123171

Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there.

llvm-svn: 123170

These functions not longer assert when passed 0, but simply return false instead.

No functional change intended.

llvm-svn: 123155

llvm-svn: 123102

llvm-svn: 123048