49 lines
1.8 KiB
LLVM
49 lines
1.8 KiB
LLVM
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; RUN: opt -passes='loop-unroll-full' -disable-verify -disable-loop-unrolling=true --mtriple x86_64-pc-linux-gnu -S -o - %s | FileCheck %s
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; This checks that the loop full unroller will fire in the new pass manager
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; when forced via #pragma in the source (or annotation in the code).
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; Completely unroll the inner loop
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; CHECK-LABEL: @foo
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; CHECK: br i1
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; CHECK-NOT: br i1
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; Function Attrs: noinline nounwind optnone uwtable
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define void @foo() local_unnamed_addr #0 {
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bb:
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%tmp = alloca [5 x i32*], align 16
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br label %bb7.preheader
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bb3.loopexit: ; preds = %bb10
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%spec.select.lcssa = phi i32 [ %spec.select, %bb10 ]
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%tmp5.not = icmp eq i32 %spec.select.lcssa, 0
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br i1 %tmp5.not, label %bb24, label %bb7.preheader
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bb7.preheader: ; preds = %bb3.loopexit, %bb
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%tmp1.06 = phi i32 [ 5, %bb ], [ %spec.select.lcssa, %bb3.loopexit ]
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br label %bb10
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bb10: ; preds = %bb10, %bb7.preheader
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%indvars.iv = phi i64 [ 0, %bb7.preheader ], [ %indvars.iv.next, %bb10 ]
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%tmp1.14 = phi i32 [ %tmp1.06, %bb7.preheader ], [ %spec.select, %bb10 ]
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%tmp13 = getelementptr inbounds [5 x i32*], [5 x i32*]* %tmp, i64 0, i64 %indvars.iv
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%tmp14 = load i32*, i32** %tmp13, align 8
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%tmp15.not = icmp ne i32* %tmp14, null
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%tmp18 = sext i1 %tmp15.not to i32
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%spec.select = add nsw i32 %tmp1.14, %tmp18
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond.not = icmp eq i64 %indvars.iv.next, 5
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br i1 %exitcond.not, label %bb3.loopexit, label %bb10, !llvm.loop !1
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bb24: ; preds = %bb3.loopexit
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ret void
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}
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attributes #0 = { nounwind uwtable }
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!llvm.module.flags = !{!0}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = distinct !{!1, !2}
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!2 = !{!"llvm.loop.unroll.full"}
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