[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
2020-07-16 20:09:47 +02:00
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; 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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2015-09-10 07:27:38 +02:00
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2017-01-19 00:56:42 +01:00
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; CHECK: Loop %bb1: backedge-taken count is ((2 * %a.promoted) /u 2)
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2015-09-10 07:27:38 +02:00
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.10.0"
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@a = global i8 -127, align 1
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@b = common global i32 0, align 4
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declare void @use(i32)
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define i32 @main() {
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bb:
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%a.promoted = load i8, i8* @a
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br label %bb1
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bb1: ; preds = %bb1, %bb
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%tmp = phi i8 [ %tmp2, %bb1 ], [ %a.promoted, %bb ]
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%tmp2 = add i8 %tmp, -1
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%tmp3 = sext i8 %tmp to i32
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%tmp4 = xor i32 %tmp3, -1
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%tmp5 = sext i8 %tmp2 to i32
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%tmpf = sub nsw i32 %tmp4, %tmp5
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%tmp6 = trunc i32 %tmpf to i8
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%tmp7 = icmp eq i8 %tmp6, 0
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br i1 %tmp7, label %bb8, label %bb1
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bb8: ; preds = %bb1
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store i8 %tmp2, i8* @a
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store i32 %tmp4, i32* @b
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%tmp9 = sext i8 %tmp2 to i32
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call void @use(i32 %tmp9)
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ret i32 0
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}
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