Jingyue Wu 69adc159ee Disable indvar widening if arithmetics on the wider type are more expensive ... Summary: IndVarSimplify should not widen an indvar if arithmetics on the wider indvar are more expensive than those on the narrower indvar. For instance, although NVPTX64 treats i64 as a legal type, an ADD on i64 is twice as expensive as that on i32, because the hardware needs to simulate a 64-bit integer using two 32-bit integers. Split from D6188, and based on D6195 which adds NVPTXTargetTransformInfo. Fixes PR21148. Test Plan: Added @indvar_32_bit that verifies we do not widen an indvar if the arithmetics on the wider type are more expensive. Reviewers: jholewinski, eliben, meheff, atrick Reviewed By: atrick Subscribers: jholewinski, llvm-commits Differential Revision: http://reviews.llvm.org/D6196 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221772 91177308-0d34-0410-b5e6-96231b3b80d8		2014-11-12 06:58:45 +00:00
..
Analysis	Revert "IR: MDNode => Value"	2014-11-11 21:30:22 +00:00
AsmParser
Bitcode	Revert "IR: MDNode => Value"	2014-11-11 21:30:22 +00:00
CodeGen	Revert "IR: MDNode => Value"	2014-11-11 21:30:22 +00:00
DebugInfo
ExecutionEngine	Remove the now unused StringRefMemoryObject.h.	2014-11-12 02:13:27 +00:00
IR	Extend intrinsic name mangling to support arrays, named structs, and function types.	2014-11-12 00:21:51 +00:00
IRReader	Remove unused variable. NFC.	2014-11-06 23:16:57 +00:00
LineEditor
Linker	Revert "IR: MDNode => Value"	2014-11-11 21:30:22 +00:00
LTO	libLTO: Assert if LTOCodeGenerator and LTOModule are from different contexts	2014-11-11 23:13:10 +00:00
MC	Remove the now unused StringRefMemoryObject.h.	2014-11-12 02:13:27 +00:00
Object	Object, support both mach-o archive t.o.c file names	2014-11-12 01:37:45 +00:00
Option
ProfileData	Use ErrorOr for the ::create factory on instrumented and sample profilers.	2014-11-03 00:51:45 +00:00
Support	Merge StreamableMemoryObject into MemoryObject.	2014-11-12 03:55:46 +00:00
TableGen
Target	Disable indvar widening if arithmetics on the wider type are more expensive	2014-11-12 06:58:45 +00:00
Transforms	Disable indvar widening if arithmetics on the wider type are more expensive	2014-11-12 06:58:45 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile