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3 Commits

Author SHA1 Message Date
Arthur Eubanks 50153213c8 [test][NewPM] Remove RUN lines using -analyze 
Only tests in llvm/test/Analysis.

-analyze is legacy PM-specific.

This only touches files with `-passes`.

I looked through everything and made sure that everything had a new PM equivalent.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D109040
 2021-09-02 11:38:14 -07:00
Roman Lebedev 1bb7ab8c4a
[SCEV] Recognize @llvm.abs as smax(x, -x) 
As per alive2 (ignoring undef):

----------------------------------------
define i32 @src(i32 %x, i1 %y) {
%0:
  %r = abs i32 %x, 0
  ret i32 %r
}
=>
define i32 @tgt(i32 %x, i1 %y) {
%0:
  %neg_x = mul i32 %x, 4294967295
  %r = smax i32 %x, %neg_x
  ret i32 %r
}
Transformation seems to be correct!

----------------------------------------
define i32 @src(i32 %x, i1 %y) {
%0:
  %r = abs i32 %x, 1
  ret i32 %r
}
=>
define i32 @tgt(i32 %x, i1 %y) {
%0:
  %neg_x = mul nsw i32 %x, 4294967295
  %r = smax i32 %x, %neg_x
  ret i32 %r
}
Transformation seems to be correct!
 2020-09-21 20:25:53 +03:00
Roman Lebedev 83c2d10d3c
[NFC][SCEV] Add tests for @llvm.abs intrinsic 2020-09-21 20:25:53 +03:00