864dda5fd5
[InstSimplify] Add tests that fold instructions with poison operands (NFC)
2020-12-02 01:01:59 +09:00
3f100e64b4
[InstSimplify] fix fmin/fmax miscompile for partial undef vectors (PR47567)
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It would also be correct to return the variable operand in these cases,
but eliminating a variable use is probably better for optimization.
2020-09-18 10:05:44 -04:00
8985755762
[InstSimplify] add limit folds for fmin/fmax
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If the constant operand is the opposite of the min/max value,
then the result must be the other value.
This is based on the similar codegen transform proposed in:
D87571
2020-09-15 10:58:44 -04:00
55d371abd7
[InstSimplify] add folds for fmin/fmax with 'nnan'
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maximum(nnan X, +INF) --> +INF
minimum(nnan X, -INF) --> -INF
This is based on the similar codegen transform proposed in:
D87571
2020-09-14 11:46:11 -04:00
7526376164
[InstSimplify] allow folds for fmin/fmax with 'ninf'
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maxnum(ninf X, +FLT_MAX) --> +FLT_MAX
minnum(ninf X, -FLT_MAX) --> -FLT_MAX
This is based on the similar codegen transform proposed in:
D87571
2020-09-14 11:18:08 -04:00
dae68fdf9e
[InstSimplify] add/move tests for fmin/fmax; NFC
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The new tests are duplicated from the sibling patch for codegen:
D87571
2020-09-14 10:24:19 -04:00
Juneyoung Lee