53 lines
1.6 KiB
LLVM
53 lines
1.6 KiB
LLVM
|
; RUN: opt -basic-aa -loop-versioning -S < %s | FileCheck %s
|
||
|
|
; RUN: opt -aa-pipeline=basic-aa -passes=loop-versioning -S < %s | FileCheck %s
|
||
|
|
|
||
|
|
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
|
||
|
|
|
||
|
|
; Version this loop with overlap checks between a, c and b, c.
|
||
|
|
|
||
|
|
define void @f(i32* %a, i32* %b, i32* %c) {
|
||
|
|
entry:
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
; CHECK: for.body.lver.check:
|
||
|
|
; CHECK: icmp
|
||
|
|
; CHECK: icmp
|
||
|
|
; CHECK: icmp
|
||
|
|
; CHECK: icmp
|
||
|
|
; CHECK-NOT: icmp
|
||
|
|
; CHECK: br i1 %memcheck.conflict, label %for.body.ph.lver.orig, label %for.body.ph
|
||
|
|
|
||
|
|
; CHECK: for.body.ph.lver.orig:
|
||
|
|
; CHECK: for.body.lver.orig:
|
||
|
|
; CHECK: br i1 %exitcond.lver.orig, label %for.end.loopexit, label %for.body.lver.orig
|
||
|
|
; CHECK: for.body.ph:
|
||
|
|
; CHECK: for.body:
|
||
|
|
; CHECK: br i1 %exitcond, label %for.end.loopexit12, label %for.body
|
||
|
|
; CHECK: for.end.loopexit:
|
||
|
|
; CHECK: br label %for.end
|
||
|
|
; CHECK: for.end.loopexit12:
|
||
|
|
; CHECK: br label %for.end
|
||
|
|
; CHECK: for.end:
|
||
|
|
|
||
|
|
for.body: ; preds = %for.body, %entry
|
||
|
|
%ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
|
||
|
|
|
||
|
|
%arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
|
||
|
|
%loadA = load i32, i32* %arrayidxA, align 4
|
||
|
|
|
||
|
|
%arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
|
||
|
|
%loadB = load i32, i32* %arrayidxB, align 4
|
||
|
|
|
||
|
|
%mulC = mul i32 %loadA, %loadB
|
||
|
|
|
||
|
|
%arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind
|
||
|
|
store i32 %mulC, i32* %arrayidxC, align 4
|
||
|
|
|
||
|
|
%add = add nuw nsw i64 %ind, 1
|
||
|
|
%exitcond = icmp eq i64 %add, 20
|
||
|
|
br i1 %exitcond, label %for.end, label %for.body
|
||
|
|
|
||
|
|
for.end: ; preds = %for.body
|
||
|
|
ret void
|
||
|
|
}
|