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09cfe7939a
Many tests use opt's -analyze feature, which does not translate well to
NPM and has better alternatives. The alternative here is to explicitly
add a pass that calls ScalarEvolution::print().
The legacy pass manager RUNs aren't changing, but they are now pinned to
the legacy pass manager. For each legacy pass manager RUN, I added a
corresponding NPM RUN using the 'print<scalar-evolution>' pass. For
compatibility with update_analyze_test_checks.py and existing test
CHECKs, 'print<scalar-evolution>' now prints what -analyze prints per
function.
This was generated by the following Python script and failures were
manually fixed up:
import sys
for i in sys.argv:
with open(i, 'r') as f:
s = f.read()
with open(i, 'w') as f:
for l in s.splitlines():
if "RUN:" in l and ' -analyze ' in l and '\\' not in l:
f.write(l.replace(' -analyze ', ' -analyze -enable-new-pm=0 '))
f.write('\n')
f.write(l.replace(' -analyze ', ' -disable-output ').replace(' -scalar-evolution ', ' "-passes=print<scalar-evolution>" ').replace(" | ", " 2>&1 | "))
f.write('\n')
else:
f.write(l)
There are a couple failures still in ScalarEvolution under NPM, but
those are due to other unrelated naming conflicts.
Reviewed By: asbirlea
Differential Revision: https://reviews.llvm.org/D83798
70 lines
2.5 KiB
LLVM
70 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
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; RUN: opt -S -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s
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; RUN: opt -S -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s
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; These testcases aren't *identical* but they have the same/similar meaning.
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; The obvious case.
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define i32 @div(i32 %val, i32 %num) nounwind {
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; CHECK-LABEL: 'div'
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; CHECK-NEXT: Classifying expressions for: @div
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; CHECK-NEXT: %tmp1 = udiv i32 %val, %num
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; CHECK-NEXT: --> (%val /u %num) U: full-set S: full-set
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; CHECK-NEXT: %tmp2 = mul i32 %tmp1, %num
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; CHECK-NEXT: --> ((%val /u %num) * %num) U: full-set S: full-set
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; CHECK-NEXT: Determining loop execution counts for: @div
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;
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%tmp1 = udiv i32 %val, %num
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%tmp2 = mul i32 %tmp1, %num
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ret i32 %tmp2
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}
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define i32 @sdiv(i32 %val, i32 %num) nounwind {
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; CHECK-LABEL: 'sdiv'
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; CHECK-NEXT: Classifying expressions for: @sdiv
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; CHECK-NEXT: %tmp1 = sdiv i32 %val, %num
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; CHECK-NEXT: --> %tmp1 U: full-set S: full-set
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; CHECK-NEXT: %tmp2 = mul i32 %tmp1, %num
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; CHECK-NEXT: --> (%num * %tmp1) U: full-set S: full-set
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; CHECK-NEXT: Determining loop execution counts for: @sdiv
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;
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%tmp1 = sdiv i32 %val, %num
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%tmp2 = mul i32 %tmp1, %num
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ret i32 %tmp2
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}
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; Or, it could be a number of equivalent patterns with mask:
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; b) x & (-1 << nbits)
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; d) x >> (32 - y) << (32 - y)
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define i32 @mask_b(i32 %val, i32 %numlowbits) nounwind {
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; CHECK-LABEL: 'mask_b'
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; CHECK-NEXT: Classifying expressions for: @mask_b
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; CHECK-NEXT: %mask = shl i32 -1, %numlowbits
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; CHECK-NEXT: --> %mask U: full-set S: full-set
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; CHECK-NEXT: %masked = and i32 %mask, %val
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; CHECK-NEXT: --> %masked U: full-set S: full-set
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; CHECK-NEXT: Determining loop execution counts for: @mask_b
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;
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%mask = shl i32 -1, %numlowbits
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%masked = and i32 %mask, %val
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ret i32 %masked
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}
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define i32 @mask_d(i32 %val, i32 %lowbits) nounwind {
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; CHECK-LABEL: 'mask_d'
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; CHECK-NEXT: Classifying expressions for: @mask_d
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; CHECK-NEXT: %numlowbits = sub i32 32, %lowbits
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; CHECK-NEXT: --> (32 + (-1 * %lowbits)) U: full-set S: full-set
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; CHECK-NEXT: %lowbitscleared = lshr i32 %val, %numlowbits
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; CHECK-NEXT: --> %lowbitscleared U: full-set S: full-set
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; CHECK-NEXT: %masked = shl i32 %lowbitscleared, %numlowbits
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; CHECK-NEXT: --> %masked U: full-set S: full-set
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; CHECK-NEXT: Determining loop execution counts for: @mask_d
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;
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%numlowbits = sub i32 32, %lowbits
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%lowbitscleared = lshr i32 %val, %numlowbits
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%masked = shl i32 %lowbitscleared, %numlowbits
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ret i32 %masked
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}
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