xref: /llvm-project/llvm/test/CodeGen/PowerPC/ppc-ctr-dead-code.ll (revision b922a3621116b404d868af8b74cab25ab78555be)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr9 -verify-machineinstrs | FileCheck %s --check-prefixes=CHECK,V01,CHECK-V0
3; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr9 -verify-machineinstrs | FileCheck %s --check-prefixes=CHECK,V01,CHECK-V1
4; RUN: llc < %s -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 -verify-machineinstrs | FileCheck %s --check-prefixes=CHECK,V23,CHECK-V2
5; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr8 -verify-machineinstrs | FileCheck %s --check-prefixes=CHECK,V23,CHECK-V3
6
7; Function Attrs: norecurse nounwind readonly
8define signext i32 @limit_loop(i32 signext %iters, ptr nocapture readonly %vec, i32 signext %limit) local_unnamed_addr {
9; CHECK-LABEL: limit_loop:
10; CHECK:       # %bb.0: # %entry
11; CHECK-NEXT:    mr 6, 3
12; CHECK-NEXT:    li 3, 0
13; CHECK-NEXT:    cmpwi 6, 0
14; CHECK-NEXT:    blelr 0
15; CHECK-NEXT:  # %bb.1: # %for.body.preheader
16; CHECK-NEXT:    mtctr 6
17; CHECK-NEXT:    addi 4, 4, -4
18; CHECK-NEXT:    b .LBB0_3
19; CHECK-NEXT:    .p2align 4
20; CHECK-NEXT:  .LBB0_2: # %for.cond
21; CHECK-NEXT:    #
22; CHECK-NEXT:    bdzlr
23; CHECK-NEXT:  .LBB0_3: # %for.body
24; CHECK-NEXT:    #
25; CHECK-NEXT:    lwzu 6, 4(4)
26; CHECK-NEXT:    cmpw 6, 5
27; CHECK-NEXT:    blt 0, .LBB0_2
28; CHECK-NEXT:  # %bb.4:
29; CHECK-NEXT:    li 3, 1
30; CHECK-NEXT:    blr
31entry:
32  %cmp5 = icmp sgt i32 %iters, 0
33  br i1 %cmp5, label %for.body.preheader, label %cleanup
34
35for.body.preheader:                               ; preds = %entry
36  %0 = sext i32 %iters to i64
37  br label %for.body
38
39for.cond:                                         ; preds = %for.body
40  %cmp = icmp slt i64 %indvars.iv.next, %0
41  br i1 %cmp, label %for.body, label %cleanup
42
43for.body:                                         ; preds = %for.body.preheader, %for.cond
44  %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.cond ]
45  %arrayidx = getelementptr inbounds i32, ptr %vec, i64 %indvars.iv
46  %1 = load i32, ptr %arrayidx, align 4
47  %cmp1 = icmp slt i32 %1, %limit
48  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
49  br i1 %cmp1, label %for.cond, label %cleanup
50
51cleanup:                                          ; preds = %for.body, %for.cond, %entry
52  %2 = phi i32 [ 0, %entry ], [ 0, %for.cond ], [ 1, %for.body ]
53  ret i32 %2
54}
55
56
57;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
58; CHECK-V0: {{.*}}
59; CHECK-V1: {{.*}}
60; CHECK-V2: {{.*}}
61; CHECK-V3: {{.*}}
62; V01: {{.*}}
63; V23: {{.*}}
64