Vedant Kumar e48597a50e [InstCombine] Preserve debug values for eliminable casts ...

A cast from A to B is eliminable if its result is casted to C, and if
the pair of casts could just be expressed as a single cast. E.g here,
%c1 is eliminable:

  %c1 = zext i16 %A to i32
  %c2 = sext i32 %c1 to i64

InstCombine optimizes away eliminable casts. This patch teaches it to
insert a dbg.value intrinsic pointing to the final result, so that local
variables pointing to the eliminable result are preserved.

Differential Revision: https://reviews.llvm.org/D42566

llvm-svn: 323570

2018-01-26 22:02:52 +00:00

..

CMakeLists.txt

[CMake] NFC. Updating CMake dependency specifications

2016-11-17 04:36:50 +00:00

InstCombineAddSub.cpp

[InstCombine] canonicalize constant-minus-boolean to select-of-constants

2017-12-06 21:22:57 +00:00

InstCombineAndOrXor.cpp

[InstCombine] narrow masked zexted binops (PR35792)

2018-01-25 16:34:36 +00:00

InstCombineCalls.cpp

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

InstCombineCasts.cpp

[InstCombine] Preserve debug values for eliminable casts

2018-01-26 22:02:52 +00:00

InstCombineCompares.cpp

[InstCombine] weaken assertions for icmp folds (PR35846)

2018-01-09 18:56:03 +00:00

InstCombineInternal.h

[InstCombine] narrow masked zexted binops (PR35792)

2018-01-25 16:34:36 +00:00

InstCombineLoadStoreAlloca.cpp

Remove redundant includes from lib/Transforms.

2017-12-13 21:31:01 +00:00

InstCombineMulDivRem.cpp

[InstCombine] (X << Y) / X -> 1 << Y

2018-01-21 16:14:51 +00:00

InstCombinePHI.cpp

Remove redundant includes from lib/Transforms.

2017-12-13 21:31:01 +00:00

InstCombineSelect.cpp

[InstCombine] Make foldSelectOpOp able to handle two-operand getelementptr

2018-01-19 10:05:15 +00:00

InstCombineShifts.cpp

[InstCombine] Check for out of range ashr values using APInt before calling getZExtValue

2018-01-09 14:23:46 +00:00

InstCombineSimplifyDemanded.cpp

[InstCombine] fix demanded-bits propagation for zext/trunc

2018-01-17 14:39:28 +00:00

InstCombineVectorOps.cpp

[InstCombine] Gracefully handle out of range extractelement indices

2017-12-27 12:00:18 +00:00

InstructionCombining.cpp

[PM][InstCombine] fixing omission of AliasAnalysis in new-pass-manager's version of InstCombine

2017-12-14 10:36:31 +00:00

LLVMBuild.txt

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