xref: /llvm-project/llvm/test/Transforms/LoopStrengthReduce/X86/pr62563.ll (revision 0a3dc73e700b4a37bc435bf7c02213161b27f54a) 
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
2; RUN: opt -loop-reduce -S < %s | FileCheck %s
3target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
4target triple = "x86_64-unknown-linux-gnu"
5
6; XFAIL: *
7
8define void @test() {
9; CHECK-LABEL: define void @test() {
10; CHECK-NEXT:  bb:
11; CHECK-NEXT:    br label [[BB3:%.*]]
12; CHECK:       bb3:
13; CHECK-NEXT:    [[LSR_IV:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[BB3]] ], [ 159, [[BB:%.*]] ]
14; CHECK-NEXT:    [[PHI:%.*]] = phi i64 [ 158, [[BB]] ], [ [[ADD5:%.*]], [[BB3]] ]
15; CHECK-NEXT:    [[PHI4:%.*]] = phi i32 [ 0, [[BB]] ], [ [[ADD6:%.*]], [[BB3]] ]
16; CHECK-NEXT:    [[ADD5]] = add i64 [[PHI]], -4
17; CHECK-NEXT:    [[ADD6]] = add i32 [[PHI4]], 4
18; CHECK-NEXT:    [[LSR_IV_NEXT]] = add nsw i32 [[LSR_IV]], -4
19; CHECK-NEXT:    [[ICMP:%.*]] = icmp ult i64 [[ADD5]], 7
20; CHECK-NEXT:    br i1 [[ICMP]], label [[BB7:%.*]], label [[BB3]]
21; CHECK:       bb7:
22; CHECK-NEXT:    [[UMAX7:%.*]] = call i32 @llvm.umax.i32(i32 [[LSR_IV_NEXT]], i32 10)
23; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[UMAX7]], [[ADD6]]
24; CHECK-NEXT:    [[UMIN6:%.*]] = call i32 @llvm.umin.i32(i32 [[LSR_IV_NEXT]], i32 11)
25; CHECK-NEXT:    [[TMP1:%.*]] = add i32 [[UMIN6]], [[ADD6]]
26; CHECK-NEXT:    [[SMAX5:%.*]] = call i32 @llvm.smax.i32(i32 [[LSR_IV_NEXT]], i32 10)
27; CHECK-NEXT:    [[TMP2:%.*]] = add i32 [[SMAX5]], [[ADD6]]
28; CHECK-NEXT:    [[SMIN4:%.*]] = call i32 @llvm.smin.i32(i32 [[LSR_IV_NEXT]], i32 10)
29; CHECK-NEXT:    [[TMP3:%.*]] = add i32 [[SMIN4]], [[ADD6]]
30; CHECK-NEXT:    call void @use.umax.res(i32 [[TMP0]])
31; CHECK-NEXT:    call void @use.umin.res(i32 [[TMP1]])
32; CHECK-NEXT:    call void @use.smax.res(i32 [[TMP2]])
33; CHECK-NEXT:    call void @use.smin.res(i32 [[TMP3]])
34; CHECK-NEXT:    ret void
35;
36bb:
37  br label %bb3
38
39bb3:                                              ; preds = %bb3, %bb
40  %phi = phi i64 [ 158, %bb ], [ %add5, %bb3 ]
41  %phi4 = phi i32 [ 0, %bb ], [ %add6, %bb3 ]
42  %add = add i64 %phi, -3
43  %trunc = trunc i64 %add to i32
44  %umax = call i32 @llvm.umax.i32(i32 %trunc, i32 10)
45  %umin = call i32 @llvm.umin.i32(i32 %trunc, i32 11)
46  %smax = call i32 @llvm.smax.i32(i32 %trunc, i32 10)
47  %smin = call i32 @llvm.smin.i32(i32 %trunc, i32 10)
48  %add5 = add i64 %phi, -4
49  %add6 = add i32 %phi4, 4
50  %icmp = icmp ult i64 %add5, 7
51  br i1 %icmp, label %bb7, label %bb3
52
53bb7:                                              ; preds = %bb3
54  %umax.res = add i32 %add6, %umax
55  %umin.res = add i32 %add6, %umin
56  %smax.res = add i32 %add6, %smax
57  %smin.res = add i32 %add6, %smin
58  call void @use.umax.res(i32 %umax.res)
59  call void @use.umin.res(i32 %umin.res)
60  call void @use.smax.res(i32 %smax.res)
61  call void @use.smin.res(i32 %smin.res)
62  ret void
63}
64
65; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
66declare i32 @llvm.umax.i32(i32, i32) #0
67declare i32 @llvm.umin.i32(i32, i32) #0
68declare i32 @llvm.smax.i32(i32, i32) #0
69declare i32 @llvm.smin.i32(i32, i32) #0
70
71declare void @use.umax.res(i32)
72declare void @use.umin.res(i32)
73declare void @use.smax.res(i32)
74declare void @use.smin.res(i32)
75
76attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
77