forked from OSchip/llvm-project
32 lines
711 B
LLVM
32 lines
711 B
LLVM
|
; RUN: opt -S -loop-vectorize < %s | FileCheck %s
|
||
|
|
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
|
||
|
|
|
||
|
|
; Check that we vectorize only bottom-tested loops.
|
||
|
|
; This is a reduced testcase from PR21302.
|
||
|
|
;
|
||
|
|
; rdar://problem/18886083
|
||
|
|
|
||
|
|
%struct.X = type { i32, i16 }
|
||
|
|
; CHECK-LABEL: @foo(
|
||
|
|
; CHECK-NOT: vector.body
|
||
|
|
|
||
|
|
define void @foo(i32 %n) {
|
||
|
|
entry:
|
||
|
|
br label %for.cond
|
||
|
|
|
||
|
|
for.cond:
|
||
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
||
|
|
%cmp = icmp slt i32 %i, %n
|
||
|
|
br i1 %cmp, label %for.body, label %if.end
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%iprom = sext i32 %i to i64
|
||
|
|
%b = getelementptr inbounds %struct.X* undef, i64 %iprom, i32 1
|
||
|
|
store i16 0, i16* %b, align 4
|
||
|
|
%inc = add nsw i32 %i, 1
|
||
|
|
br label %for.cond
|
||
|
|
|
||
|
|
if.end:
|
||
|
|
ret void
|
||
|
|
}
|