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llvm-mirror/test/Analysis/ScalarEvolution/2008-07-12-UnneededSelect1.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

41 lines
1.3 KiB
LLVM

; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution 2>&1 | FileCheck %s
; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 2>&1 | FileCheck %s
; PR2261
; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'foo'
; CHECK-NOT: smax
@lut = common global [256 x i8] zeroinitializer, align 32 ; <[256 x i8]*> [#uses=1]
define void @foo(i32 %count, i32* %srcptr, i32* %dstptr) nounwind {
entry:
icmp sgt i32 %count, 0 ; <i1>:0 [#uses=1]
br i1 %0, label %bb.nph, label %return
bb.nph: ; preds = %entry
br label %bb
bb: ; preds = %bb1, %bb.nph
%j.01 = phi i32 [ %8, %bb1 ], [ 0, %bb.nph ] ; <i32> [#uses=1]
load i32, i32* %srcptr, align 4 ; <i32>:1 [#uses=2]
and i32 %1, 255 ; <i32>:2 [#uses=1]
and i32 %1, -256 ; <i32>:3 [#uses=1]
getelementptr [256 x i8], [256 x i8]* @lut, i32 0, i32 %2 ; <i8*>:4 [#uses=1]
load i8, i8* %4, align 1 ; <i8>:5 [#uses=1]
zext i8 %5 to i32 ; <i32>:6 [#uses=1]
or i32 %6, %3 ; <i32>:7 [#uses=1]
store i32 %7, i32* %dstptr, align 4
add i32 %j.01, 1 ; <i32>:8 [#uses=2]
br label %bb1
bb1: ; preds = %bb
icmp slt i32 %8, %count ; <i1>:9 [#uses=1]
br i1 %9, label %bb, label %bb1.return_crit_edge
bb1.return_crit_edge: ; preds = %bb1
br label %return
return: ; preds = %bb1.return_crit_edge, %entry
ret void
}