forked from OSchip/llvm-project
62 lines
2.3 KiB
LLVM
62 lines
2.3 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -newgvn %s -S | FileCheck %s
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declare void @use(i32)
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; Make sure !tbaa metadata is preserved when only ssa_copy calls introduced by
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; PredicateInfo are replaced.
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define i32 @test(i32* %p1, i32* %p2, i1 %c) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[P1:%.*]], align 8, !tbaa !0
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; CHECK-NEXT: [[CMP_1:%.*]] = icmp slt i32 [[LV]], 1
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; CHECK-NEXT: br i1 [[CMP_1]], label [[EXIT:%.*]], label [[IF_FALSE:%.*]]
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; CHECK: if.false:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[EXIT]], label [[FOR_CHECK:%.*]]
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; CHECK: for.check:
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; CHECK-NEXT: [[CMP_2:%.*]] = icmp sgt i32 [[LV]], 0
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; CHECK-NEXT: br i1 [[CMP_2]], label [[FOR_PH:%.*]], label [[EXIT]]
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; CHECK: for.ph:
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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 i32 [ 0, [[FOR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: call void @use(i32 [[IV]])
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
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; CHECK-NEXT: [[CMP_3:%.*]] = icmp ne i32 [[IV_NEXT]], [[LV]]
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; CHECK-NEXT: br i1 [[CMP_3]], label [[FOR_BODY]], label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret i32 [[LV]]
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;
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entry:
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%lv = load i32, i32* %p1, align 8, !tbaa !0
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%cmp.1 = icmp slt i32 %lv, 1
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br i1 %cmp.1, label %exit, label %if.false
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if.false: ; preds = %entry
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br i1 %c, label %exit, label %for.check
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for.check: ; preds = %if.false
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%cmp.2 = icmp sgt i32 %lv, 0
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br i1 %cmp.2, label %for.ph, label %exit
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for.ph: ; preds = %for.check
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br label %for.body
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for.body: ; preds = %for.body, %for.ph
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%iv = phi i32 [ 0, %for.ph ], [ %iv.next, %for.body ]
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call void @use(i32 %iv)
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%iv.next = add nuw nsw i32 %iv, 1
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%cmp.3 = icmp ne i32 %iv.next, %lv
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br i1 %cmp.3, label %for.body, label %exit
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exit: ; preds = %for.body, %for.check, %if.false, %entry
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ret i32 %lv
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}
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!0 = !{!1, !2, i64 0}
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!1 = !{!"FULL", !2, i64 0, !2, i64 4, !3, i64 8}
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!2 = !{!"int", !3, i64 0}
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!3 = !{!"omnipotent char", !4, i64 0}
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!4 = !{!"Simple C/C++ TBAA"}
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