[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 -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-max-iterations=0 2>&1 | FileCheck %s
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2008-07-30 08:04:08 +08:00
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; PR2607
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define i32 @_Z1aj(i32 %j) nounwind {
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entry:
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icmp sgt i32 0, %j ; <i1>:0 [#uses=1]
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br i1 %0, label %bb.preheader, label %return
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bb.preheader: ; preds = %entry
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br label %bb
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bb: ; preds = %bb, %bb.preheader
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%i.01 = phi i32 [ %1, %bb ], [ 0, %bb.preheader ] ; <i32> [#uses=1]
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add i32 %i.01, -1 ; <i32>:1 [#uses=3]
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icmp sgt i32 %1, %j ; <i1>:2 [#uses=1]
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br i1 %2, label %bb, label %return.loopexit
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return.loopexit: ; preds = %bb
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br label %return
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return: ; preds = %return.loopexit, %entry
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%i.0.lcssa = phi i32 [ 0, %entry ], [ %1, %return.loopexit ] ; <i32> [#uses=1]
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ret i32 %i.0.lcssa
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}
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2009-10-27 22:54:46 +08:00
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; CHECK: backedge-taken count is (-1 + (-1 * %j))
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