xref: /llvm-project/llvm/test/Transforms/LoopVectorize/SystemZ/zero_unroll.ll (revision 29441e4f5fa5f5c7709f7cf180815ba97f611297)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
2; RUN: opt -S -passes=loop-vectorize -mtriple=s390x-linux-gnu -vectorizer-min-trip-count=8 < %s | FileCheck %s
3
4define i32 @main(i32 %arg, ptr nocapture readnone %arg1) #0 {
5; CHECK-LABEL: define i32 @main(
6; CHECK-SAME: i32 [[ARG:%.*]], ptr readnone captures(none) [[ARG1:%.*]]) #[[ATTR0:[0-9]+]] {
7; CHECK-NEXT:  [[ENTRY:.*]]:
8; CHECK-NEXT:    [[TMP0:%.*]] = alloca i8, align 1
9; CHECK-NEXT:    br label %[[LOOP:.*]]
10; CHECK:       [[LOOP]]:
11; CHECK-NEXT:    [[STOREMERGE_I_I:%.*]] = phi i8 [ 0, %[[ENTRY]] ], [ [[TMP12_I_I:%.*]], %[[LOOP]] ]
12; CHECK-NEXT:    store i8 [[STOREMERGE_I_I]], ptr [[TMP0]], align 2
13; CHECK-NEXT:    [[TMP8_I_I:%.*]] = icmp ult i8 [[STOREMERGE_I_I]], 8
14; CHECK-NEXT:    [[TMP12_I_I]] = add nuw nsw i8 [[STOREMERGE_I_I]], 1
15; CHECK-NEXT:    br i1 [[TMP8_I_I]], label %[[LOOP]], label %[[RET:.*]]
16; CHECK:       [[RET]]:
17; CHECK-NEXT:    ret i32 0
18;
19entry:
20  %0 = alloca i8, align 1
21  br label %loop
22
23loop:
24  %storemerge.i.i = phi i8 [ 0, %entry ], [ %tmp12.i.i, %loop ]
25  store i8 %storemerge.i.i, ptr %0, align 2
26  %tmp8.i.i = icmp ult i8 %storemerge.i.i, 8
27  %tmp12.i.i = add nuw nsw i8 %storemerge.i.i, 1
28  br i1 %tmp8.i.i, label %loop, label %ret
29
30ret:
31  ret i32 0
32}
33
34attributes #0 = { "target-cpu"="z13" }
35
36