llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-06 06:33:24 +00:00

History

Quentin Colombet d465eced34 [X86] Lower VSELECT into SHRUNKBLEND when we shrink the bits used into the

condition to match a blend.
This prevents optimizations that work on VSELECT to perform invalid
transformations. Indeed, the optimized condition does not match the vector
boolean content that is expected and bad things may happen.

This patch yields the exact same code on the whole test-suite + specs (-O3 and
-O3 -march=core-avx2), it improves one test case (vector-blend.ll) and fixes a
bug reduced in vselect-avx.ll.

<rdar://problem/18819506>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221429 91177308-0d34-0410-b5e6-96231b3b80d8

2014-11-06 02:25:03 +00:00

Analysis

[SCEV] Improve Scalar Evolution's use of no {un,}signed wrap flags

2014-10-31 11:40:32 +00:00

Assembler

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Bindings

[OCaml] Run tests twice, with ocamlc and ocamlopt (if available)

2014-11-03 09:50:53 +00:00

Bitcode

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BugPoint