1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes=loop-vectorize \
3; RUN: -force-tail-folding-style=data-with-evl \
4; RUN: -prefer-predicate-over-epilogue=predicate-dont-vectorize \
5; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck %s
6
7; RUN: opt -passes=loop-vectorize \
8; RUN: -force-tail-folding-style=none \
9; RUN: -prefer-predicate-over-epilogue=predicate-dont-vectorize \
10; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck %s
11
12; No need to emit predicated vector code if the vector instructions with masking are not required.
13define i32 @no_masking() {
14; CHECK-LABEL: @no_masking(
15; CHECK-NEXT:  entry:
16; CHECK-NEXT:    br label [[BODY:%.*]]
17; CHECK:       body:
18; CHECK-NEXT:    [[P:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[BODY]] ]
19; CHECK-NEXT:    [[INC]] = add i32 [[P]], 1
20; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[INC]], 0
21; CHECK-NEXT:    br i1 [[CMP]], label [[END:%.*]], label [[BODY]]
22; CHECK:       end:
23; CHECK-NEXT:    ret i32 0
24;
25entry:
26  br label %body
27
28body:
29  %p = phi i32 [ 1, %entry ], [ %inc, %body ]
30  %inc = add i32 %p, 1
31  %cmp = icmp eq i32 %inc, 0
32  br i1 %cmp, label %end, label %body
33
34end:
35  ret i32 0
36}
37