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

Instead encode llvm IR level property "HasSideEffects" in an operand (shared
with IsAlignStack). Added MachineInstrs::hasUnmodeledSideEffects() to check
the operand when the instruction is an INLINEASM.

This allows memory instructions to be moved around INLINEASM instructions.

llvm-svn: 123044

Revert r122955. It seems using movups to lower memcpy can cause massive regression (even on Nehalem) in edge cases. I also didn't see any real performance benefit.

llvm-svn: 123015

Patch by Richard Simth.

llvm-svn: 122962

llvm-svn: 122957

The theory is it's still faster than a pair of movq / a quad of movl. This
will probably hurt older chips like P4 but should run faster on current
and future Intel processors. rdar://8817010

llvm-svn: 122955

etc. takes an option OptSize. If OptSize is true, it would return
the inline limit for functions with attribute OptSize.

llvm-svn: 122952

works only on MinGW32. On 64-bit, the function to call is "__chkstk".
Patch by KS Sreeram!

llvm-svn: 122934

beginning of the "main" function. The assembler complains about the invalid
suffix for the 'call' instruction. The right instruction is "callq __main".
Patch by KS Sreeram!

llvm-svn: 122933

llvm-svn: 122921

llvm-svn: 122920

bundles in the pass.

llvm-svn: 122833