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llvm-mirror/test/Analysis/ScalarEvolution/2009-07-04-GroupConstantsWidthMismatch.ll
Arthur Eubanks 09cfe7939a [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 11:24:07 -07:00

18 lines
452 B
LLVM

; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution
; RUN: opt < %s -disable-output -scalar-evolution
; PR4501
define void @test() {
entry:
%0 = load i16, i16* undef, align 1
%1 = lshr i16 %0, 8
%2 = and i16 %1, 3
%3 = zext i16 %2 to i32
%4 = load i8, i8* undef, align 1
%5 = lshr i8 %4, 4
%6 = and i8 %5, 1
%7 = zext i8 %6 to i32
%t1 = add i32 %3, %7
ret void
}