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Sanjay Patel 46f44cd641 [InstSimplify] fold nested min/max intrinsics with constant operands 
This is based on the existing code for the non-intrinsic idioms
in InstCombine.

The vector constant constraint is non-obvious: undefs should be
ok in the outer call, but they can't propagate safely from the
inner call in all cases. Example:

https://alive2.llvm.org/ce/z/-2bVbM
  define <2 x i8> @src(<2 x i8> %x) {
  %0:
    %m = umin <2 x i8> %x, { 7, undef }
    %m2 = umin <2 x i8> { 9, 9 }, %m
    ret <2 x i8> %m2
  }
  =>
  define <2 x i8> @tgt(<2 x i8> %x) {
  %0:
    %m = umin <2 x i8> %x, { 7, undef }
    ret <2 x i8> %m
  }
  Transformation doesn't verify!
  ERROR: Value mismatch

  Example:
  <2 x i8> %x = < undef, undef >

  Source:
  <2 x i8> %m = < #x00 (0)	[based on undef value], #x00 (0) >
  <2 x i8> %m2 = < #x00 (0), #x00 (0) >

  Target:
  <2 x i8> %m = < #x07 (7), #x10 (16) >
  Source value: < #x00 (0), #x00 (0) >
  Target value: < #x07 (7), #x10 (16) >
2020-08-04 08:44:48 -04:00
benchmarks
bindings [Bindings] Remove ipc_propagation. 2020-08-02 22:36:53 +01:00
cmake Partially revert "[cmake] Make MSVC generate appropriate __cplusplus macro definition" 2020-08-04 12:22:11 +03:00
docs Add test utility 'split-file' 2020-08-03 20:42:09 -07:00
examples [llvm][examples][SimplifyCFG] Fix pass's IR changed reporting 2020-07-27 13:39:58 -06:00
include [AArch64][SVE] Fix CFA calculation in presence of SVE objects. 2020-08-04 11:47:06 +01:00
lib [InstSimplify] fold nested min/max intrinsics with constant operands 2020-08-04 08:44:48 -04:00
projects
resources
runtimes [CMake] Bump CMake minimum version to 3.13.4 2020-07-22 14:25:07 -04:00
test [InstSimplify] fold nested min/max intrinsics with constant operands 2020-08-04 08:44:48 -04:00
tools [llvm-readobj] - A third attempt to fix BB. 2020-08-04 12:44:26 +03:00
unittests [DebugInfo][unittest] Use YAML to generate the .debug_loclists section. 2020-08-04 16:37:51 +08:00
utils Partially revert "[cmake] Make MSVC generate appropriate __cplusplus macro definition" 2020-08-04 12:22:11 +03:00
.clang-format
.clang-tidy - Update .clang-tidy to ignore parameters of main like functions for naming violations in clang and llvm directory 2020-01-31 16:49:45 +00:00
.gitattributes
.gitignore [clangd] Store index in '.cache/clangd/index' instead of '.clangd/index' 2020-07-07 14:53:45 +02:00
CMakeLists.txt [CMake] Bump CMake minimum version to 3.13.4 2020-07-22 14:25:07 -04:00
CODE_OWNERS.TXT Make myself code owner of InferAddressSpaces 2020-06-08 21:26:01 -04:00
configure
CREDITS.TXT [test commit] Add my name to the CREDITS.TXT 2020-07-24 12:05:53 -05:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
README.txt Test commit. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT

README.txt 

The LLVM Compiler Infrastructure
================================

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Please see the documentation provided in docs/ for further
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