[SCEV] Fix ScalarEvolution tests under NPM
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
2020-07-17 02:09:47 +08:00
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; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution | FileCheck %s
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; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s
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2014-02-11 23:44:32 +08:00
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declare void @foo()
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define void @test1() nounwind {
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entry:
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br label %for.cond
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for.cond: ; preds = %if.end, %entry
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%i.0 = phi i32 [ 2, %entry ], [ %dec, %if.end ]
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switch i32 %i.0, label %if.end [
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i32 0, label %for.end
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i32 1, label %if.then
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]
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if.then: ; preds = %for.cond
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tail call void @foo()
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br label %if.end
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if.end: ; preds = %for.cond, %if.then
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%dec = add nsw i32 %i.0, -1
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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; CHECK-LABEL: @test1
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; CHECK: Loop %for.cond: backedge-taken count is 2
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; CHECK: Loop %for.cond: max backedge-taken count is 2
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}
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