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
63 lines
1.3 KiB
LLVM
63 lines
1.3 KiB
LLVM
; RUN: opt < %s -scalar-evolution -analyze -enable-new-pm=0 | FileCheck %s
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; RUN: opt < %s "-passes=print<scalar-evolution>" -disable-output 2>&1 | FileCheck %s
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; One side exit dominating the latch, exact backedge taken count is known.
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define void @test_01() {
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; CHECK-LABEL: Determining loop execution counts for: @test_01
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; CHECK-NEXT: Loop %loop: <multiple exits> backedge-taken count is 50
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %backedge ]
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%side.cond = icmp slt i32 %iv, 50
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br i1 %side.cond, label %backedge, label %side.exit
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backedge:
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%iv.next = add i32 %iv, 1
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%loop.cond = icmp slt i32 %iv, 100
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br i1 %loop.cond, label %loop, label %exit
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exit:
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ret void
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side.exit:
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ret void
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}
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define void @test_02(i1 %c) {
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; CHECK-LABEL: Determining loop execution counts for: @test_02
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; CHECK-NEXT: Loop %loop: <multiple exits> backedge-taken count is 50
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %backedge ]
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br i1 %c, label %if.true, label %if.false
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if.true:
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br label %merge
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if.false:
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br label %merge
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merge:
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%side.cond = icmp slt i32 %iv, 50
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br i1 %side.cond, label %backedge, label %side.exit
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backedge:
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%iv.next = add i32 %iv, 1
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%loop.cond = icmp slt i32 %iv, 100
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br i1 %loop.cond, label %loop, label %exit
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exit:
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ret void
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side.exit:
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ret void
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}
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