blob: 5494c8e9da7dd2fa7706704a2c90ac6c098285e6 [file] [log] [blame]
; RUN: opt -S -loop-unroll -unroll-runtime -unroll-count=2 -verify-loop-info -pass-remarks=loop-unroll < %s 2>&1 | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Verify that runtime-unrolling a top-level loop that has nested loops does not
; make the unroller produce invalid loop-info.
; CHECK: remark: {{.*}}: unrolled loop by a factor of 2 with run-time trip count
; CHECK: @widget
; CHECK: ret void
define void @widget(double* %arg, double* %arg1, double* %p, i64* %q1, i64* %q2) local_unnamed_addr {
br label %header.outer
header.outer: ; preds = %latch.outer, %entry
%tmp = phi double* [ %tmp8, %latch.outer ], [ %arg, %entry ]
br label %header.inner
header.inner: ; preds = %latch.inner, %header.outer
br i1 undef, label %latch.inner, label %latch.outer
latch.inner: ; preds = %header.inner
%tmp5 = load i64, i64* %q1, align 8
store i64 %tmp5, i64* %q2, align 8
%tmp6 = icmp eq double* %p, %arg
br label %header.inner
latch.outer: ; preds = %header.inner
store double 0.0, double* %p, align 8
%tmp8 = getelementptr inbounds double, double* %tmp, i64 1
%tmp9 = icmp eq double* %tmp8, %arg1
br i1 %tmp9, label %exit, label %header.outer
exit: ; preds = %latch.outer
ret void