llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-23 02:32:11 +00:00

History

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

Analysis

PR9634: Don't unconditionally tell the AliasSetTracker that the PreheaderLoad

2011-04-07 01:35:06 +00:00

Archive

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Assembler

Reapply r129401 with patch for clang.

2011-04-13 00:36:11 +00:00

Bindings/Ocaml

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Bitcode