derek.holloway
7502bf64a4
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51 lines
2.0 KiB
LLVM
51 lines
2.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes='loop-mssa(simple-loop-unswitch<nontrivial>,licm)' -verify-memoryssa -S < %s | FileCheck %s
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; Check that running LICM after SimpleLoopUnswitch does not result in a crash.
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define i32 @foo(i1 %arg, ptr %arg1) {
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; CHECK-LABEL: define i32 @foo(
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; CHECK-SAME: i1 [[ARG:%.*]], ptr [[ARG1:%.*]]) {
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; CHECK-NEXT: [[START:.*:]]
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; CHECK-NEXT: [[ARG_FR:%.*]] = freeze i1 [[ARG]]
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; CHECK-NEXT: br i1 [[ARG_FR]], label %[[START_SPLIT_US:.*]], label %[[START_SPLIT:.*]]
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; CHECK: [[START_SPLIT_US]]:
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; CHECK-NEXT: br label %[[LOOP_US:.*]]
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; CHECK: [[LOOP_US]]:
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; CHECK-NEXT: br label %[[BB0:.*]]
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; CHECK: [[BB0]]:
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; CHECK-NEXT: br label %[[BB1:.*]]
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; CHECK: [[BB1]]:
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; CHECK-NEXT: [[UNSWITCHED_SELECT_US:%.*]] = phi ptr [ [[ARG1]], %[[BB0]] ]
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; CHECK-NEXT: [[I3_US:%.*]] = call i32 [[UNSWITCHED_SELECT_US]]()
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; CHECK-NEXT: br i1 true, label %[[LOOP_US]], label %[[RET_SPLIT_US:.*]]
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; CHECK: [[RET_SPLIT_US]]:
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; CHECK-NEXT: [[I3_LCSSA_US:%.*]] = phi i32 [ [[I3_US]], %[[BB1]] ]
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; CHECK-NEXT: br label %[[RET:.*]]
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; CHECK: [[START_SPLIT]]:
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; CHECK-NEXT: br label %[[LOOP:.*]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: br label %[[BB2:.*]]
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; CHECK: [[BB2]]:
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; CHECK-NEXT: br i1 false, label %[[LOOP]], label %[[RET_SPLIT:.*]]
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; CHECK: [[RET_SPLIT]]:
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; CHECK-NEXT: [[I3_LE:%.*]] = call i32 @bar()
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; CHECK-NEXT: br label %[[RET]]
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; CHECK: [[RET]]:
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; CHECK-NEXT: [[DOTUS_PHI:%.*]] = phi i32 [ [[I3_LE]], %[[RET_SPLIT]] ], [ [[I3_LCSSA_US]], %[[RET_SPLIT_US]] ]
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; CHECK-NEXT: ret i32 [[DOTUS_PHI]]
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;
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start:
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br label %loop
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loop: ; preds = %loop, %bb
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%i = select i1 %arg, ptr %arg1, ptr @bar
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%i3 = call i32 %i()
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br i1 %arg, label %loop, label %ret
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ret: ; preds = %loop
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ret i32 %i3
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}
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declare i32 @bar() nounwind willreturn memory(none)
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