source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/Hexagon/hwloop-preheader.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 1.5 KB
Line 
1; RUN: llc -march=hexagon -mcpu=hexagonv5 -hexagon-hwloop-preheader < %s
2; REQUIRES: asserts
3
4; Test that the preheader is added to the parent loop, otherwise
5; we generate an invalid hardware loop.
6
7; Function Attrs: nounwind readonly
8define void @test(i16 signext %n) #0 {
9entry:
10  br i1 undef, label %for.cond4.preheader.preheader.split.us, label %for.end22
11
12for.cond4.preheader.preheader.split.us:
13  %0 = sext i16 %n to i32
14  br label %for.body9.preheader.us
15
16for.body9.us:
17  %indvars.iv = phi i32 [ %indvars.iv.next.7, %for.body9.us ], [ 0, %for.body9.preheader.us ]
18  %indvars.iv.next.7 = add i32 %indvars.iv, 8
19  %lftr.wideiv.7 = trunc i32 %indvars.iv.next.7 to i16
20  %exitcond.7 = icmp slt i16 %lftr.wideiv.7, 0
21  br i1 %exitcond.7, label %for.body9.us, label %for.body9.us.ur
22
23for.body9.preheader.us:
24  %i.030.us.pmt = phi i32 [ %inc21.us.pmt, %for.end.loopexit.us ], [ 0, %for.cond4.preheader.preheader.split.us ]
25  br i1 undef, label %for.body9.us, label %for.body9.us.ur
26
27for.body9.us.ur:
28  %exitcond.ur.old = icmp eq i16 undef, %n
29  br i1 %exitcond.ur.old, label %for.end.loopexit.us, label %for.body9.us.ur
30
31for.end.loopexit.us:
32  %inc21.us.pmt = add i32 %i.030.us.pmt, 1
33  %exitcond33 = icmp eq i32 %inc21.us.pmt, %0
34  br i1 %exitcond33, label %for.end22, label %for.body9.preheader.us
35
36for.end22:
37  ret void
38}
39
40attributes #0 = { nounwind readonly "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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