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| ; RUN: opt -march=hexagon -hexagon-loop-idiom -S < %s | FileCheck %s
; CHECK-LABEL: define void @fred
; Check that this test does not crash.
target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
target triple = "hexagon"
%struct.0 = type { [120 x i16], [80 x i16], [80 x i16], [80 x i16], [80 x i16], [80 x i16], [40 x i16], [40 x i16], [40 x i16], [40 x i16], [40 x i16], [40 x i16] }
define void @fred(%struct.0* %demod_state) local_unnamed_addr #0 {
entry:
br label %for.body309
for.body309: ; preds = %for.body309, %entry
%max_diff.0300 = phi i16 [ %max_diff.1, %for.body309 ], [ 0, %entry ]
%arrayidx322.phi = phi i16* [ undef, %entry ], [ %arrayidx322.inc, %for.body309 ]
%arrayidx331.phi = phi i16* [ undef, %entry ], [ %arrayidx331.inc, %for.body309 ]
%lag.4299.apmt = phi i32 [ %inc376.apmt, %for.body309 ], [ 0, %entry ]
%0 = load i16, i16* %arrayidx322.phi, align 2
%conv323 = sext i16 %0 to i32
%sub324 = sub nsw i32 0, %conv323
%ispos258 = icmp sgt i32 %sub324, -1
%1 = select i1 %ispos258, i32 %sub324, i32 0
%add326 = add nsw i32 %1, 0
%2 = load i16, i16* %arrayidx331.phi, align 2
%conv332 = sext i16 %2 to i32
%sub333 = sub nsw i32 0, %conv332
%ispos260 = icmp sgt i32 %sub333, -1
%3 = select i1 %ispos260, i32 %sub333, i32 undef
%sub342 = sub nsw i32 0, %conv323
%ispos262 = icmp sgt i32 %sub342, -1
%4 = select i1 %ispos262, i32 %sub342, i32 undef
%sub351 = sub nsw i32 0, %conv332
%ispos264 = icmp sgt i32 %sub351, -1
%5 = select i1 %ispos264, i32 %sub351, i32 0
%sub360 = sub nsw i32 %conv323, %conv332
%ispos266 = icmp sgt i32 %sub360, -1
%6 = select i1 %ispos266, i32 %sub360, i32 0
%add335 = add nsw i32 %add326, %4
%add344 = add nsw i32 %add335, %3
%add353 = add i32 %add344, %5
%add362 = add i32 %add353, %6
%div363 = sdiv i32 %add362, 6
%conv364 = trunc i32 %div363 to i16
%sext268 = shl i32 %div363, 16
%conv369 = ashr exact i32 %sext268, 16
%conv370 = sext i16 %max_diff.0300 to i32
%cmp371 = icmp sgt i32 %conv369, %conv370
%max_diff.1 = select i1 %cmp371, i16 %conv364, i16 %max_diff.0300
%inc376.apmt = add nuw nsw i32 %lag.4299.apmt, 1
%exitcond331 = icmp ne i32 %inc376.apmt, 40
%arrayidx322.inc = getelementptr i16, i16* %arrayidx322.phi, i32 1
%arrayidx331.inc = getelementptr i16, i16* %arrayidx331.phi, i32 1
br i1 %exitcond331, label %for.body309, label %for.end377
for.end377: ; preds = %for.body309
%max_diff.1.lcssa = phi i16 [ %max_diff.1, %for.body309 ]
%cmp407 = icmp sgt i16 %max_diff.1.lcssa, 4
br label %for.body405
for.body405: ; preds = %if.end437, %for.end377
%arrayidx412 = getelementptr inbounds %struct.0, %struct.0* %demod_state, i32 0, i32 11, i32 undef
br i1 %cmp407, label %if.then409, label %if.end437
if.then409: ; preds = %for.body405
%arrayidx416 = getelementptr inbounds [40 x i16], [40 x i16]* null, i32 0, i32 undef
%7 = load i16, i16* %arrayidx416, align 2
%conv417 = sext i16 %7 to i32
%shl = shl i32 %conv417, 4
%mul419 = mul nsw i32 %shl, 655
%add420 = add nsw i32 %mul419, 0
br label %if.end437
if.end437: ; preds = %if.then409, %for.body405
%mul431.sink = phi i32 [ %add420, %if.then409 ], [ undef, %for.body405 ]
%shr432257 = lshr i32 %mul431.sink, 15
%conv433 = trunc i32 %shr432257 to i16
store i16 %conv433, i16* %arrayidx412, align 2
br label %for.body405
}
attributes #0 = { noinline nounwind "target-cpu"="hexagonv60" "target-features"="-hvx,-long-calls" }
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