Diana Picus 7511d6e3fd [ARM GlobalISel] Support G_CTLZ and G_CTLZ_ZERO_UNDEF ... We can now select CLZ via the TableGen'erated code, so support G_CTLZ and G_CTLZ_ZERO_UNDEF throughout the pipeline for types <= s32. Legalizer: If the CLZ instruction is available, use it for both G_CTLZ and G_CTLZ_ZERO_UNDEF. Otherwise, use a libcall for G_CTLZ_ZERO_UNDEF and lower G_CTLZ in terms of it. In order to achieve this we need to add support to the LegalizerHelper for the legalization of G_CTLZ_ZERO_UNDEF for s32 as a libcall (__clzsi2). We also need to allow lowering of G_CTLZ in terms of G_CTLZ_ZERO_UNDEF if that is supported as a libcall, as opposed to just if it is Legal or Custom. Due to a minor refactoring of the helper function in charge of this, we will also allow the same behaviour for G_CTTZ and G_CTPOP. This is not going to be a problem in practice since we don't yet have support for treating G_CTTZ and G_CTPOP as libcalls (not even in DAGISel). Reg bank select: Map G_CTLZ to GPR. G_CTLZ_ZERO_UNDEF should not make it to this point. Instruction select: Nothing to do. llvm-svn: 347545		2018-11-26 11:07:02 +00:00
..
GlobalISel	[ARM GlobalISel] Support G_CTLZ and G_CTLZ_ZERO_UNDEF	2018-11-26 11:07:02 +00:00
AArch64SelectionDAGTest.cpp	[SelectionDAG] Assert on the width of DemandedElts argument to computeKnownBits for all vector typed operations not just build_vector.	2018-11-08 20:29:17 +00:00
CMakeLists.txt	[Codegen] Fix test added in rL341380: AArch64SelectionDAGTest needs to link against Analysis lib.	2018-09-04 20:19:17 +00:00
DIEHashTest.cpp	[DebugInfo] Reduce debug_str_offsets section size	2018-08-07 09:54:52 +00:00
LowLevelTypeTest.cpp
MachineInstrBundleIteratorTest.cpp
MachineInstrTest.cpp	[DebugInfo] DISubprogram flags get their own flags word. NFC.	2018-11-19 18:29:28 +00:00
MachineOperandTest.cpp
ScalableVectorMVTsTest.cpp	[IR][CodeGen] Remove dependency on EVT from IR/Function.cpp. Move EVT to CodeGen layer.	2018-03-29 17:21:10 +00:00