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Sanjoy Das aa92cae14e [BypassSlowDivision] Improve our handling of divisions by constants 
(This reapplies r314253.  r314253 was reverted on r314482 because of a
correctness regression on P100, but that regression was identified to be
something else.)

Summary:
Don't bail out on constant divisors for divisions that can be narrowed without
introducing control flow .  This gives us a 32 bit multiply instead of an
emulated 64 bit multiply in the generated PTX assembly.

Reviewers: jlebar

Subscribers: jholewinski, mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D38265

llvm-svn: 319677
 		2017-12-04 19:21:58 +00:00
clang Changing mixed CRLFs back to LFs; NFC. 2017-12-04 18:36:34 +00:00
clang-tools-extra [clangd] Split CodeComplete into a separate file. NFC 2017-12-04 13:49:59 +00:00
compiler-rt [sanitizer] 64-bit allocator's PopulateFreeArray partial refactor 2017-12-04 18:56:38 +00:00
debuginfo-tests Re-revert "Refactor debuginfo-tests." 2017-11-21 01:20:28 +00:00
libclc configure.py: Add gfx900 (Vega, Raven) 2017-11-27 11:14:06 +00:00
libcxx Fix PR#35948: generate_n does not accept floating point Size arguments. 2017-12-04 18:59:14 +00:00
libcxxabi [libc++abi] Add install-cxxabi-stripped target 2017-11-30 23:25:51 +00:00
libunwind [libunwind] Switch to add_llvm_install_targets 2017-11-30 23:24:08 +00:00
lld [ELF] Add BYTE expression to test case for non-contiguous relro [NFC] 2017-12-04 10:34:15 +00:00
lldb Makefile.rules: compile all tests with -fno-limit-debug-info 2017-12-04 13:31:56 +00:00
llgo irgen: Create functions instead of global variables for builtin hash and equal algorithms. 2017-06-04 22:11:28 +00:00
llvm [BypassSlowDivision] Improve our handling of divisions by constants 2017-12-04 19:21:58 +00:00
openmp [CMake] Detect information about test compiler 2017-11-30 17:08:31 +00:00
parallel-libs [Axccel] Remove -Wno-missing-braces in build 2016-12-19 21:34:07 +00:00
polly [NFC] In GPGPU testcases, replace numeric registers in CHECK directives. 2017-12-01 14:16:39 +00:00
README.md Add an svn project to contain the files that appear at the root of the 2017-10-19 21:09:49 +00:00

README.md

Low Level Virtual Machine (LLVM)

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