04dbb44b9e
This test would redirect stderr into /dev/null for no reason. Update it to better match the tests around it. This extra indirection also caused the test to not play nicely with lit's internal shell with profcheck enabled. Related to #162966.
110 lines
4.4 KiB
LLVM
110 lines
4.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes='print<scalar-evolution>,loop-mssa(licm,loop-simplifycfg,loop-predication)' -verify-scev < %s | FileCheck %s
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; Make sure we don't assert due to insufficient SCEV invalidation.
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define i64 @"main"(ptr addrspace(1) %p, i1 %check) {
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; CHECK-LABEL: define i64 @main(
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; CHECK-SAME: ptr addrspace(1) [[P:%.*]], i1 [[CHECK:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: switch i32 0, label %[[ENTRY_SPLIT:.*]] [
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; CHECK-NEXT: i32 1, label %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT:.*]]
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; CHECK-NEXT: ]
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; CHECK: [[ENTRY_SPLIT]]:
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; CHECK-NEXT: br label %[[LOOP0_PRE:.*]]
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; CHECK: [[LOOP0_PRE]]:
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; CHECK-NEXT: br i1 [[CHECK]], label %[[EXIT:.*]], label %[[LOOP0:.*]]
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; CHECK: [[LOOP0]]:
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; CHECK-NEXT: [[LENGTH:%.*]] = load atomic i32, ptr addrspace(1) [[P]] unordered, align 4
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; CHECK-NEXT: [[TMP0:%.*]] = icmp ugt i32 [[LENGTH]], 1
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; CHECK-NEXT: br i1 [[TMP0]], label %[[LOOP0_OUT:.*]], label %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT1:.*]]
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; CHECK: [[LOOP0_OUT]]:
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; CHECK-NEXT: br label %[[LOOP0_PRE]]
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; CHECK: [[LOOP1_PREHEADER_SPLIT_LOOP_EXIT]]:
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; CHECK-NEXT: [[T_LE:%.*]] = add i32 0, 1
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; CHECK-NEXT: br label %[[LOOP1_PREHEADER:.*]]
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; CHECK: [[LOOP1_PREHEADER_SPLIT_LOOP_EXIT1]]:
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; CHECK-NEXT: [[LENGTH_LCSSA_PH2:%.*]] = phi i32 [ [[LENGTH]], %[[LOOP0]] ]
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; CHECK-NEXT: [[LOCAL_PH3:%.*]] = phi i32 [ 0, %[[LOOP0]] ]
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; CHECK-NEXT: br label %[[LOOP1_PREHEADER]]
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; CHECK: [[LOOP1_PREHEADER]]:
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; CHECK-NEXT: [[LENGTH_LCSSA:%.*]] = phi i32 [ poison, %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT]] ], [ [[LENGTH_LCSSA_PH2]], %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT1]] ]
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; CHECK-NEXT: [[LOCAL:%.*]] = phi i32 [ [[T_LE]], %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT]] ], [ [[LOCAL_PH3]], %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT1]] ]
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; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[LENGTH_LCSSA]], -1
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; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i32 310, [[TMP1]]
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; CHECK-NEXT: [[TMP3:%.*]] = icmp ult i32 4, [[LENGTH_LCSSA]]
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; CHECK-NEXT: [[TMP4:%.*]] = and i1 [[TMP3]], [[TMP2]]
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; CHECK-NEXT: [[TMP5:%.*]] = freeze i1 [[TMP4]]
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; CHECK-NEXT: br label %[[LOOP1:.*]]
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; CHECK: [[LOOP1]]:
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; CHECK-NEXT: [[IV1:%.*]] = phi i32 [ 4, %[[LOOP1_PREHEADER]] ], [ [[IV1_NEXT:%.*]], %[[LOOP1_GUARDED:.*]] ]
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; CHECK-NEXT: [[TMP6:%.*]] = icmp ult i32 [[IV1]], [[LENGTH_LCSSA]]
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; CHECK-NEXT: [[WC:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[TMP7:%.*]] = and i1 [[TMP5]], [[WC]]
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; CHECK-NEXT: br i1 [[TMP7]], label %[[LOOP1_GUARDED]], label %[[DEOPT_EXIT:.*]]
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; CHECK: [[LOOP1_GUARDED]]:
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; CHECK-NEXT: call void @llvm.assume(i1 [[TMP6]])
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; CHECK-NEXT: [[IV1_NEXT]] = add nuw nsw i32 [[IV1]], 1
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; CHECK-NEXT: [[CHK:%.*]] = icmp ugt i32 [[IV1]], 310
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; CHECK-NEXT: br i1 [[CHK]], label %[[LOOP1_EXIT:.*]], label %[[LOOP1]]
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; CHECK: [[DEOPT_EXIT]]:
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; CHECK-NEXT: [[TMP8:%.*]] = call i64 (...) @llvm.experimental.deoptimize.i64(i32 13) [ "deopt"() ]
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; CHECK-NEXT: ret i64 [[TMP8]]
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; CHECK: [[LOOP1_EXIT]]:
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; CHECK-NEXT: ret i64 0
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: ret i64 0
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;
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entry:
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br label %loop0.pre
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loop0.pre:
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br i1 %check, label %exit, label %loop0
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loop0:
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%length = load atomic i32, ptr addrspace(1) %p unordered, align 4
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%28 = icmp ugt i32 %length, 1
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br i1 %28, label %loop0.out, label %loop1.preheader
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loop0.out:
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%t = add i32 0, 1
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br i1 false, label %loop1.preheader, label %mid
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loop1.preheader:
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%length.lcssa = phi i32 [ %length, %loop0.out ], [ %length, %loop0 ]
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%local = phi i32 [ 0, %loop0 ], [ %t, %loop0.out ]
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br label %loop1
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loop1:
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%iv1 = phi i32 [ 4, %loop1.preheader ], [ %iv1.next, %loop1.guarded ]
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%82 = icmp ult i32 %iv1, %length.lcssa
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%wc = call i1 @llvm.experimental.widenable.condition()
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%guard.chk = and i1 %82, %wc
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br i1 %guard.chk, label %loop1.guarded, label %deopt-exit
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loop1.guarded:
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%iv1.next = add nuw nsw i32 %iv1, 1
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%chk = icmp ugt i32 %iv1, 310
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br i1 %chk, label %loop1.exit, label %loop1
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deopt-exit:
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%100 = call i64 (...) @llvm.experimental.deoptimize.i64(i32 13) [ "deopt"() ]
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ret i64 %100
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loop1.exit:
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ret i64 0
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mid:
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br label %loop0.pre
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exit:
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ret i64 0
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}
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declare i64 @foo()
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declare i64 @llvm.experimental.deoptimize.i64(...)
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; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(inaccessiblemem: readwrite)
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declare noundef i1 @llvm.experimental.widenable.condition()
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