1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -p loop-vectorize -S %s | FileCheck %s
target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128"
target triple = "riscv64-unknown-linux-gnu"
; Test for https://github.com/llvm/llvm-project/issues/114860.
define void @test_invariant_cond_for_select(ptr %dst, i8 %x) #0 {
; CHECK-LABEL: define void @test_invariant_cond_for_select(
; CHECK-SAME: ptr [[DST:%.*]], i8 [[X:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: br label %[[LOOP:.*]]
; CHECK: [[LOOP]]:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT: [[C_1:%.*]] = icmp eq i8 [[X]], 0
; CHECK-NEXT: [[C_2:%.*]] = icmp sgt i64 [[IV]], 0
; CHECK-NEXT: [[C_2_EXT:%.*]] = zext i1 [[C_2]] to i64
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C_1]], i64 [[C_2_EXT]], i64 0
; CHECK-NEXT: [[SEL_TRUNC:%.*]] = trunc i64 [[SEL]] to i8
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 [[IV]]
; CHECK-NEXT: store i8 [[SEL_TRUNC]], ptr [[GEP]], align 1
; CHECK-NEXT: [[IV_NEXT]] = add i64 [[IV]], 4
; CHECK-NEXT: [[EC:%.*]] = icmp ult i64 [[IV]], 14
; CHECK-NEXT: br i1 [[EC]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%c.1 = icmp eq i8 %x, 0
%c.2 = icmp sgt i64 %iv, 0
%c.2.ext = zext i1 %c.2 to i64
%sel = select i1 %c.1, i64 %c.2.ext, i64 0
%sel.trunc = trunc i64 %sel to i8
%gep = getelementptr inbounds i8, ptr %dst, i64 %iv
store i8 %sel.trunc, ptr %gep, align 1
%iv.next = add i64 %iv, 4
%ec = icmp ult i64 %iv, 14
br i1 %ec, label %loop, label %exit
exit:
ret void
}
attributes #0 = { "target-features"="+64bit,+v" }
|
