Remove RISCV from LLVM_ALL_TARGETS in CMakeLists.txt

It was mistakenly added to that list in D23560 (committed in rL285712). RISCV
is an experimental backend and should never have been in that list, I
mistakenly interpreted LLVM_ALL_TARGETS as a list of all targets rather than
targets to build by default. Unfortunately, because of this the RISCV backend
has been building by default when it shouldn't be.

This commet adds a description comment, which should help to avoid such
mistakes in the future.

See my message to llvm-dev for more information and analysis
<http://lists.llvm.org/pipermail/llvm-dev/2017-August/116347.html>.

Differential Revision: https://reviews.llvm.org/D36538

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310796 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fe5343b..a056abe 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -309,6 +309,7 @@ set(LLVM_CMAKE_PATH ${LLVM_MAIN_SRC_DIR}/cmake/modules)
 set(LLVM_EXAMPLES_BINARY_DIR ${LLVM_BINARY_DIR}/examples)
 set(LLVM_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/include)
 
+# List of all targets to be built by default:
 set(LLVM_ALL_TARGETS
   AArch64
   AMDGPU
@@ -320,7 +321,6 @@ set(LLVM_ALL_TARGETS
   MSP430
   NVPTX
   PowerPC
-  RISCV
   Sparc
   SystemZ
   X86