commit	0966dd0d69cf66bcba55a4b5d28b1059b5c9b6a6	[log] [tgz]
author	Matt Arsenault <Matthew.Arsenault@amd.com>	Wed Jul 17 20:22:44 2019 +0000
committer	Matt Arsenault <Matthew.Arsenault@amd.com>	Wed Jul 17 20:22:44 2019 +0000
tree	25ddf531da399645f72b5cd5812d5de582de2671
parent	914a59cad825f322ef10273327e708fe5eb78283 [diff]

GlobalISel: Handle widenScalar of arbitrary G_MERGE_VALUES sources

Extract the sources to the GCD of the original size and target size,
padding with implicit_def as necessary.

Also fix the case where the requested source type is wider than the
original result type. This was ignoring the type, and just using the
destination. Do the operation in the requested type and truncate back.

llvm-svn: 366367

llvm/include/llvm/Support/MathExtras.h[diff]
llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp[diff]
llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp[diff]
llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-merge-values.mir[diff]
llvm/unittests/CodeGen/GlobalISel/LegalizerHelperTest.cpp[diff]

5 files changed

tree: 25ddf531da399645f72b5cd5812d5de582de2671

clang/
clang-tools-extra/
compiler-rt/
debuginfo-tests/
libclc/
libcxx/
libcxxabi/
libunwind/
lld/
lldb/
llgo/
llvm/
openmp/
parallel-libs/
polly/
pstl/
.arcconfig
.clang-format
.clang-tidy
.gitignore
README.md

README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.