bb50c38635
[ScalarizeMaskedMemIntrin] Use MinAlign to calculate alignment for the scalar load/stores to handle element types that are byte-sized but not powers of 2.
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This pass doesn't handle non-byte sized types correctly at all, but at least we can make byte sized types work.
llvm-svn: 343294
2018-09-28 03:35:37 +00:00
92b992164d
[ScalarizeMaskedMemIntrin] Add test cases for masked store expansion. Increase alignment of one of the masked load test cases.
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The masked store alignment is being miscalculated, but masked load is correct.
llvm-svn: 343283
2018-09-28 01:06:09 +00:00
7d234d6628
[ScalarizeMaskedMemIntrin] When expanding masked loads, start with the passthru value and insert each conditional load result over their element.
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Previously we started with undef and did one final merge at the end with a select.
llvm-svn: 343271
2018-09-27 21:28:52 +00:00
dfc0f289fa
[ScalarizeMaskedMemIntrin] Handle the case where the mask is an all zero vector.
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This shouldn't really happen in practice I hope, but we tried to handle other constant cases. We missed this one because we checked for ConstantVector without realizing that zero becomes ConstantAggregateZero instead.
So instead just check for Constant and use getAggregateElement which will do the dirty work for us.
llvm-svn: 343270
2018-09-27 21:28:46 +00:00
a6478ac5d4
[ScalarizeMaskedMemIntrin] Add dedicated IR only tests for masked load expansion so I can begin making modifications.
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llvm-svn: 343269
2018-09-27 21:28:43 +00:00
Craig Topper