1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
; RUN: opt < %s -S -passes=loop-unroll -mtriple aarch64 -mcpu=cortex-a57 -unroll-runtime-epilog=true | FileCheck %s -check-prefix=EPILOG
; RUN: opt < %s -S -passes=loop-unroll -mtriple aarch64 -mcpu=cortex-a57 -unroll-runtime-epilog=false | FileCheck %s -check-prefix=PROLOG
; RUN: opt < %s -S -passes=loop-unroll -mtriple aarch64 -mcpu=cortex-r82 -unroll-runtime-epilog=true | FileCheck %s -check-prefix=EPILOG
; RUN: opt < %s -S -passes=loop-unroll -mtriple aarch64 -mcpu=cortex-r82 -unroll-runtime-epilog=false | FileCheck %s -check-prefix=PROLOG
; Tests for unrolling loops with run-time trip counts
; EPILOG: %xtraiter = and i32 %n
; EPILOG: for.body:
; EPILOG: %lcmp.mod = icmp ne i32 %xtraiter, 0
; EPILOG: br i1 %lcmp.mod, label %for.body.epil.preheader, label %for.end.loopexit
; EPILOG: for.body.epil:
; PROLOG: %xtraiter = and i32 %n
; PROLOG: %lcmp.mod = icmp ne i32 %xtraiter, 0
; PROLOG: br i1 %lcmp.mod, label %for.body.prol.preheader, label %for.body.prol.loopexit
; PROLOG: for.body.prol:
; PROLOG: for.body:
define i32 @test(ptr nocapture %a, i32 %n) nounwind uwtable readonly {
entry:
%cmp1 = icmp eq i32 %n, 0
br i1 %cmp1, label %for.end, label %for.body
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv
%0 = load i32, ptr %arrayidx, align 4
%add = add nsw i32 %0, %sum.02
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
%sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
ret i32 %sum.0.lcssa
}
|
