forked from OSchip/llvm-project
35 lines
1.4 KiB
LLVM
35 lines
1.4 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-width=4 -S | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
|
|
|
|
; This testcase causes SCEV to return a pointer-typed exit value.
|
|
|
|
; CHECK: @f
|
|
; Expect that the pointer indvar has been converted into an integer indvar.
|
|
; CHECK: %index.next = add i64 %index, 4
|
|
define i32 @f(i32* readonly %a, i32* readnone %b) #0 {
|
|
entry:
|
|
%cmp.6 = icmp ult i32* %a, %b
|
|
br i1 %cmp.6, label %while.body.preheader, label %while.end
|
|
|
|
while.body.preheader: ; preds = %entry
|
|
br label %while.body
|
|
|
|
while.body: ; preds = %while.body.preheader, %while.body
|
|
%a.pn = phi i32* [ %incdec.ptr8, %while.body ], [ %a, %while.body.preheader ]
|
|
%acc.07 = phi i32 [ %add, %while.body ], [ 0, %while.body.preheader ]
|
|
%incdec.ptr8 = getelementptr inbounds i32, i32* %a.pn, i64 1
|
|
%0 = load i32, i32* %incdec.ptr8, align 1
|
|
%add = add nuw nsw i32 %0, %acc.07
|
|
%exitcond = icmp eq i32* %incdec.ptr8, %b
|
|
br i1 %exitcond, label %while.cond.while.end_crit_edge, label %while.body
|
|
|
|
while.cond.while.end_crit_edge: ; preds = %while.body
|
|
%add.lcssa = phi i32 [ %add, %while.body ]
|
|
br label %while.end
|
|
|
|
while.end: ; preds = %while.cond.while.end_crit_edge, %entry
|
|
%acc.0.lcssa = phi i32 [ %add.lcssa, %while.cond.while.end_crit_edge ], [ 0, %entry ]
|
|
ret i32 %acc.0.lcssa
|
|
}
|