40 lines
1.6 KiB
LLVM
40 lines
1.6 KiB
LLVM
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; RUN: opt -S -loop-unroll -unroll-runtime -unroll-count=2 -verify-loop-info -pass-remarks=loop-unroll < %s 2>&1 | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Verify that runtime-unrolling a top-level loop that has nested loops does not
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; make the unroller produce invalid loop-info.
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; CHECK: remark: {{.*}}: unrolled loop by a factor of 2 with run-time trip count
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; CHECK: @widget
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; CHECK: ret void
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define void @widget(double* %arg, double* %arg1, double* %p, i64* %q1, i64* %q2) local_unnamed_addr {
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entry:
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br label %header.outer
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header.outer: ; preds = %latch.outer, %entry
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%tmp = phi double* [ %tmp8, %latch.outer ], [ %arg, %entry ]
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br label %header.inner
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header.inner: ; preds = %latch.inner, %header.outer
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%tmp5 = load i64, i64* %q1, align 8
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%tmp6 = icmp eq double* %p, %arg
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br i1 undef, label %exiting.inner, label %latch.outer
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exiting.inner: ; preds = %latch.inner, %header.outer
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br i1 undef, label %latch.inner, label %latch.outer
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latch.inner: ; preds = %header.inner
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store i64 %tmp5, i64* %q2, align 8
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br label %header.inner
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latch.outer: ; preds = %header.inner
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store double 0.0, double* %p, align 8
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%tmp8 = getelementptr inbounds double, double* %tmp, i64 1
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%tmp9 = icmp eq double* %tmp8, %arg1
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br i1 %tmp9, label %exit, label %header.outer
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exit: ; preds = %latch.outer
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ret void
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}
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