Craig Topper
f13208ad31
[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
Craig Topper
e624e3add2
[ScalarizeMaskedMemIntrin] Fix the alignment calculation for the scalar stores of a masked store expansion.
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It should be the minimum of the original alignment and the scalar size.
llvm-svn: 343284
2018-09-28 01:06:13 +00:00
Craig Topper
9bf5908b24
[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
Craig Topper
776f6d52e2
[ScalarizeMaskedMemIntrin] When expanding masked gathers, start with the passthru vector and insert the new load results into it.
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Previously we started with undef and did a final merge with the passthru at the end.
llvm-svn: 343273
2018-09-27 21:28:59 +00:00
Craig Topper
a86a3d5210
[ScalarizeMaskedMemIntrin] Add some IR only test cases for masked gather expansion.
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llvm-svn: 343272
2018-09-27 21:28:55 +00:00
Craig Topper
747c99f102
[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
Craig Topper
9358c66d5e
[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
Craig Topper
4fb14c26de
[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
