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0a1c997c27
llvm-6502/test/CodeGen
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Chris Lattner 0a1c997c27 fix an x86 fast isel issue where we'd completely give up on folding an address 
when we have a global variable base an an index.  Instead, just give up on
folding the global variable.

Before we'd geenrate:

_test:                                  ## @test
## BB#0:
	movq	_rtx_length@GOTPCREL(%rip), %rax
	leaq	(%rax), %rax
	addq	%rdi, %rax
	movzbl	(%rax), %eax
	ret

now we generate:

_test:                                  ## @test
## BB#0:
	movq	_rtx_length@GOTPCREL(%rip), %rax
	movzbl	(%rax,%rdi), %eax
	ret

The difference is even more significant when there is a scale
involved.

This fixes rdar://9289558 - total fail with addr mode formation at -O0/x86-64


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129664 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-17 17:47:38 +00:00
..
Alpha
ARM Fix divmod libcall lowering. Convert to {S|U}DIVREM first and then expand the node to a libcall. rdar://9280991 2011-04-16 03:08:26 +00:00
Blackfin Don't completely eliminate identity copies that also modify super register liveness. 2011-03-31 17:55:25 +00:00
CBackend
CellSPU don't test for codegen of 'store undef' 2011-04-09 02:31:26 +00:00
CPP
Generic Fix a bug where RecursivelyDeleteTriviallyDeadInstructions could 2011-04-09 07:05:44 +00:00
MBlaze Add scheduling information for the MBlaze backend. 2011-04-11 22:31:52 +00:00
Mips Re-enable test o32_cc_vararg.ll. 2011-04-15 22:23:09 +00:00
MSP430
PowerPC These tests no longer require linear scan because reserved register coalescing is now universal. 2011-04-05 21:40:41 +00:00
PTX ptx: support setp's 4-operand format 2011-04-02 08:51:39 +00:00
SPARC These tests no longer require linear scan because reserved register coalescing is now universal. 2011-04-05 21:40:41 +00:00
SystemZ Fix SystemZ tests 2011-03-31 23:02:12 +00:00
Thumb Follow up on r127913. Fix Thumb revsh isel. rdar://9286766 2011-04-14 23:27:44 +00:00
Thumb2 Recommit r129383. PreRA scheduler heuristic fixes: VRegCycle, TokenFactor latency. 2011-04-13 00:38:32 +00:00
X86 fix an x86 fast isel issue where we'd completely give up on folding an address 2011-04-17 17:47:38 +00:00
XCore Fix Mips, Sparc, and XCore tests that were dependent on register allocation. 2011-03-31 18:42:43 +00:00