llvm/CodeGen at e9c0b5aba6eefdac099dfba0a43bd4cac89fb6ff - llvm

RPCS3/llvm

mirror of https://github.com/RPCS3/llvm.git synced 2025-02-06 10:38:54 +00:00

History

Andrea Di Biagio e9c0b5aba6 [DAGCombiner] Teach how to fold sext/aext/zext of constant build vectors.

This patch teaches the DAGCombiner how to fold a sext/aext/zext dag node when
the operand in input is a build vector of constants (or UNDEFs).

The inability to fold a sext/zext of a constant build_vector was the root
cause of some pcg bugs affecting vselect expansion on x86-64 with AVX support.

Before this change, the DAGCombiner only knew how to fold a sext/zext/aext of a
ConstantSDNode.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200234 91177308-0d34-0410-b5e6-96231b3b80d8

2014-01-27 18:45:30 +00:00

AArch64

[AArch64 NEON] Try to generate CONCAT_VECTOR when lowering BUILD_VECTOR or SHUFFLE_VECTOR.

2014-01-27 02:53:54 +00:00

ARM

Revert "Revert "Add Constant Hoisting Pass" (r200034)"

2014-01-25 02:02:55 +00:00

CPP

Begin adding docs and IR-level support for the inalloca attribute

2013-12-19 02:14:12 +00:00

Generic

Additional fix for 200201: due to dependence on bitwidth test was moved to X86 directory.