45 lines
1.6 KiB
LLVM
45 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=licm < %s | FileCheck %s
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@c = global i16 0, align 2
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; FIXME: The store should not be hoisted.
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define void @test() {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[V:%.*]] = phi i32 [ 10, [[ENTRY:%.*]] ], [ 0, [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[V]], 0
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; CHECK-NEXT: br i1 [[C]], label [[LOOP_EXIT:%.*]], label [[LOOP_CONT:%.*]]
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; CHECK: loop.cont:
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; CHECK-NEXT: br i1 false, label [[LOOP_IRREDUCIBLE:%.*]], label [[LOOP_LATCH]]
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; CHECK: loop.irreducible:
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; CHECK-NEXT: store i16 5, ptr @c, align 2
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; CHECK-NEXT: br label [[LOOP_LATCH]]
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; CHECK: loop.latch:
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; CHECK-NEXT: br i1 false, label [[LOOP_IRREDUCIBLE]], label [[LOOP]]
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; CHECK: loop.exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop: ; preds = %loop.latch, %entry
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%v = phi i32 [ 10, %entry ], [ 0, %loop.latch ]
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%c = icmp eq i32 %v, 0
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br i1 %c, label %loop.exit, label %loop.cont
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loop.cont: ; preds = %loop
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br i1 false, label %loop.irreducible, label %loop.latch
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loop.irreducible: ; preds = %loop.latch, %loop.cont
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store i16 5, ptr @c, align 2
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br label %loop.latch
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loop.latch: ; preds = %loop.irreducible, %loop.cont
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br i1 false, label %loop.irreducible, label %loop
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loop.exit: ; preds = %loop
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ret void
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}
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