forked from OSchip/llvm-project
86 lines
3.2 KiB
LLVM
86 lines
3.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -aa-pipeline=basic-aa -passes='loop-distribute' -enable-loop-distribute -S %s | FileCheck %s
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; Testcases inspired by PR50296, PR50288.
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define void @phi_load_store_distribute(i1 %c, i16* %A, i16* %B, i16* %C) {
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; CHECK-LABEL: @phi_load_store_distribute(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[IV:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[IF_END:%.*]] ]
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; CHECK-NEXT: [[LV:%.*]] = load i16, i16* [[A:%.*]], align 1
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; CHECK-NEXT: store i16 [[LV]], i16* [[A]], align 1
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; CHECK-NEXT: br i1 [[C:%.*]], label [[IF_THEN:%.*]], label [[IF_END]]
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; CHECK: if.then:
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; CHECK-NEXT: [[LV2:%.*]] = load i16, i16* [[A]], align 1
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; CHECK-NEXT: br label [[IF_END]]
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; CHECK: if.end:
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; CHECK-NEXT: [[C_SINK:%.*]] = phi i16* [ [[B:%.*]], [[IF_THEN]] ], [ [[C:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[LV3:%.*]] = load i16, i16* [[C_SINK]], align 2
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; CHECK-NEXT: [[ADD:%.*]] = add i16 [[LV3]], 10
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; CHECK-NEXT: store i16 [[ADD]], i16* [[C_SINK]], align 1
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i16 [[IV]], 1
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; CHECK-NEXT: [[TOBOOL_NOT:%.*]] = icmp eq i16 [[IV_NEXT]], 1000
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; CHECK-NEXT: br i1 [[TOBOOL_NOT]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]]
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; CHECK: for.end.loopexit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body: ; preds = %if.end, %entry
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%iv = phi i16 [ 0, %entry ], [ %iv.next, %if.end ]
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%lv = load i16, i16* %A, align 1
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store i16 %lv, i16* %A, align 1
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br i1 %c, label %if.then, label %if.end
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if.then: ; preds = %for.body
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%lv2 = load i16, i16* %A, align 1
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br label %if.end
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if.end: ; preds = %if.then, %for.body
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%c.sink = phi i16* [ %B, %if.then ], [ %C, %for.body ]
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%lv3 = load i16, i16* %c.sink
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%add = add i16 %lv3, 10
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store i16 %add, i16* %c.sink, align 1
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%iv.next = add nuw nsw i16 %iv, 1
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%tobool.not = icmp eq i16 %iv.next, 1000
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br i1 %tobool.not, label %for.end.loopexit, label %for.body
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for.end.loopexit: ; preds = %if.end
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ret void
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}
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define void @phi_load_distribute(i1 %c, i16* %A, i16* %B, i16* %C) {
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; CHECK-LABEL: @phi_load_distribute(
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; CHECK-NEXT: entry:
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; CHECK: for.end.loopexit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body: ; preds = %if.end, %entry
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%iv = phi i16 [ 0, %entry ], [ %iv.next, %if.end ]
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%lv = load i16, i16* %A, align 1
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store i16 %lv, i16* %A, align 1
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br i1 %c, label %if.then, label %if.end
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if.then: ; preds = %for.body
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%lv2 = load i16, i16* %A, align 1
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br label %if.end
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if.end: ; preds = %if.then, %for.body
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%c.sink = phi i16* [ %B, %if.then ], [ %C, %for.body ]
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%lv3 = load i16, i16* %c.sink
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%iv.next = add nuw nsw i16 %iv, 1
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%tobool.not = icmp eq i16 %iv.next, 1000
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br i1 %tobool.not, label %for.end.loopexit, label %for.body
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for.end.loopexit: ; preds = %if.end
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ret void
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}
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