mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-02-01 05:01:59 +01:00
09cfe7939a
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
28 lines
959 B
LLVM
28 lines
959 B
LLVM
; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution | FileCheck %s
|
|
; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
; Previously in this case the max backedge count would be computed as 1/0, which
|
|
; is correct but undesirable. It would also not fold as a constant, tripping
|
|
; asserts in SCEV.
|
|
|
|
define void @pluto(i32 %arg) {
|
|
; CHECK-LABEL: Classifying expressions for: @pluto
|
|
; CHECK: Loop %bb2: max backedge-taken count is 2
|
|
bb:
|
|
%tmp = ashr i32 %arg, 31
|
|
%tmp1 = add nsw i32 %tmp, 2
|
|
br label %bb2
|
|
|
|
bb2: ; preds = %bb2, %bb
|
|
%tmp3 = phi i32 [ 0, %bb ], [ %tmp4, %bb2 ]
|
|
%tmp4 = add nuw nsw i32 %tmp1, %tmp3
|
|
%tmp5 = icmp ult i32 %tmp4, 2
|
|
br i1 %tmp5, label %bb2, label %bb6
|
|
|
|
bb6: ; preds = %bb2
|
|
ret void
|
|
}
|