llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-19 23:29:20 +00:00

History

Chris Lattner f9d95c8835 Fix two problems in SelectionDAGLegalize::ExpandBUILD_VECTOR's handling

of BUILD_VECTORS that only have two unique elements:

1. The previous code was nondeterminstic, because it walked a map in
   SDOperand order, which isn't determinstic.
2. The previous code didn't handle the case when one element was undef
   very well.  Now we ensure that the generated shuffle mask has the
   undef vector on the RHS (instead of potentially being on the LHS)
   and that any elements that refer to it are themselves undef.  This
   allows us to compile CodeGen/X86/vec_set-9.ll into:

_test3:
	movd	%rdi, %xmm0
	punpcklqdq	%xmm0, %xmm0
	ret

instead of:

_test3:
	movd	%rdi, %xmm1
	#IMPLICIT_DEF %xmm0
	punpcklqdq	%xmm1, %xmm0
	ret

... saving a register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48060 91177308-0d34-0410-b5e6-96231b3b80d8

2008-03-09 00:29:42 +00:00

Analysis

Add Hybrid Cycle Detection to Andersen's analysis.

2008-03-05 19:31:47 +00:00

Archive

Add alias with non-external aliasee to the list of exported symbols of the library.

2008-03-04 20:15:35 +00:00

AsmParser

regenerate.

2008-03-03 18:58:47 +00:00

Bitcode

Add an unwind_to field to basic blocks, making them Users instead of Values.