[all-commits] [llvm/llvm-project] c4360b: [flang] Fix folding of ac-implied-do indices in st...
Peter Klausler via All-commits
all-commits at lists.llvm.org
Thu Dec 9 18:03:21 PST 2021
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: c4360b4547168f7c0356b49d90646666d5b778da
https://github.com/llvm/llvm-project/commit/c4360b4547168f7c0356b49d90646666d5b778da
Author: Peter Klausler <pklausler at nvidia.com>
Date: 2021-12-09 (Thu, 09 Dec 2021)
Changed paths:
M flang/lib/Evaluate/fold-implementation.h
M flang/lib/Evaluate/fold.cpp
A flang/test/Evaluate/folding30.f90
Log Message:
-----------
[flang] Fix folding of ac-implied-do indices in structure c'tors
Array constructors with implied DO loops that oversee structure
constructors were being prematurely folded into invalid constants
containing symbolic references to the ac-implied-do indices,
because they are indeed "constant expressions" as that term is
used in the Fortran standard and implemented as IsConstantExpr().
What's actually needed in structure constructor folding is a
test for actual constant values, which is what results from
folding them later with repetition in the context of folding
an ac-implied-do.
Differential Revision: https://reviews.llvm.org/D115470
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