9adbb5cb3a
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
50 lines
1.8 KiB
LLVM
50 lines
1.8 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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; The obvious case.
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define i32 @mul(i32 %val) nounwind {
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; CHECK-LABEL: 'mul'
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; CHECK-NEXT: Classifying expressions for: @mul
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; CHECK-NEXT: %tmp1 = mul i32 %val, 16
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; CHECK-NEXT: --> (16 * %val) U: [0,-15) S: [-2147483648,2147483633)
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; CHECK-NEXT: %tmp2 = udiv i32 %tmp1, 16
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; CHECK-NEXT: --> ((16 * %val) /u 16) U: [0,268435456) S: [0,268435456)
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; CHECK-NEXT: Determining loop execution counts for: @mul
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;
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%tmp1 = mul i32 %val, 16
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%tmp2 = udiv i32 %tmp1, 16
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ret i32 %tmp2
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}
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; Or, it could be any number of equivalent patterns with mask:
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; a) x & (1 << nbits) - 1
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; b) x & ~(-1 << nbits)
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; c) x & (-1 >> (32 - y))
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; d) x << (32 - y) >> (32 - y)
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define i32 @mask_abc(i32 %val) nounwind {
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; CHECK-LABEL: 'mask_abc'
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; CHECK-NEXT: Classifying expressions for: @mask_abc
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; CHECK-NEXT: %masked = and i32 %val, 15
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; CHECK-NEXT: --> (zext i4 (trunc i32 %val to i4) to i32) U: [0,16) S: [0,16)
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; CHECK-NEXT: Determining loop execution counts for: @mask_abc
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;
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%masked = and i32 %val, 15
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ret i32 %masked
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}
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define i32 @mask_d(i32 %val) 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: %highbitscleared = shl i32 %val, 4
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; CHECK-NEXT: --> (16 * %val) U: [0,-15) S: [-2147483648,2147483633)
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; CHECK-NEXT: %masked = lshr i32 %highbitscleared, 4
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; CHECK-NEXT: --> ((16 * %val) /u 16) U: [0,268435456) S: [0,268435456)
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; CHECK-NEXT: Determining loop execution counts for: @mask_d
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;
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%highbitscleared = shl i32 %val, 4
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%masked = lshr i32 %highbitscleared, 4
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ret i32 %masked
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}
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