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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
29 lines
1.2 KiB
LLVM
29 lines
1.2 KiB
LLVM
; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s
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; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s
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; ScalarEvolution should be able to use nsw information to prove that
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; this loop has a finite trip count.
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; CHECK: @le
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; CHECK: Loop %for.body: backedge-taken count is %n
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; CHECK: Loop %for.body: max backedge-taken count is 9223372036854775807
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define void @le(i64 %n, double* nocapture %p) nounwind {
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entry:
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%cmp6 = icmp slt i64 %n, 0 ; <i1> [#uses=1]
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br i1 %cmp6, label %for.end, label %for.body
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for.body: ; preds = %for.body, %entry
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%i = phi i64 [ %i.next, %for.body ], [ 0, %entry ] ; <i64> [#uses=2]
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%arrayidx = getelementptr double, double* %p, i64 %i ; <double*> [#uses=2]
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%t4 = load double, double* %arrayidx ; <double> [#uses=1]
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%mul = fmul double %t4, 2.200000e+00 ; <double> [#uses=1]
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store double %mul, double* %arrayidx
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%i.next = add nsw i64 %i, 1 ; <i64> [#uses=2]
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%cmp = icmp sgt i64 %i.next, %n ; <i1> [#uses=1]
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br i1 %cmp, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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ret void
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}
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