xref: /llvm-project/llvm/test/CodeGen/PowerPC/indirectbr.ll (revision 427fb35192f1f7bb694a5910b05abc5925a798b2)
1; RUN: llc < %s -relocation-model=pic -mtriple=powerpc-unknown-linux-gnu -ppc-asm-full-reg-names | FileCheck %s -check-prefix=PIC
2; RUN: llc < %s -relocation-model=static -mtriple=powerpc-unknown-linux-gnu -ppc-asm-full-reg-names | FileCheck %s -check-prefix=STATIC
3; RUN: llc < %s -relocation-model=pic -mtriple=powerpc64-unknown-linux-gnu -ppc-asm-full-reg-names | FileCheck %s -check-prefix=PPC64
4
5@nextaddr = global ptr null                       ; <ptr> [#uses=2]
6@C.0.2070 = private constant [5 x ptr] [ptr blockaddress(@foo, %L1), ptr blockaddress(@foo, %L2), ptr blockaddress(@foo, %L3), ptr blockaddress(@foo, %L4), ptr blockaddress(@foo, %L5)] ; <ptr> [#uses=1]
7
8define internal i32 @foo(i32 %i) nounwind {
9; PIC-LABEL: foo:
10; STATIC-LABEL: foo:
11; PPC64-LABEL: foo:
12entry:
13  %0 = load ptr, ptr @nextaddr, align 4               ; <ptr> [#uses=2]
14  %1 = icmp eq ptr %0, null                       ; <i1> [#uses=1]
15  br i1 %1, label %bb3, label %bb2
16
17bb2:                                              ; preds = %entry, %bb3
18  %gotovar.4.0 = phi ptr [ %gotovar.4.0.pre, %bb3 ], [ %0, %entry ] ; <ptr> [#uses=1]
19; PIC: mtctr
20; PIC-NEXT: bctr
21; PIC: li
22; PIC: b .LBB
23; PIC: li
24; PIC: b .LBB
25; PIC: li
26; PIC: b .LBB
27; PIC: li
28; PIC: b .LBB
29; STATIC: mtctr
30; STATIC-NEXT: bctr
31; STATIC: li
32; STATIC: b .LBB
33; STATIC: li
34; STATIC: b .LBB
35; STATIC: li
36; STATIC: b .LBB
37; STATIC: li
38; STATIC: b .LBB
39; PPC64: mtctr
40; PPC64-NEXT: bctr
41; PPC64: li
42; PPC64: b .LBB
43; PPC64: li
44; PPC64: b .LBB
45; PPC64: li
46; PPC64: b .LBB
47; PPC64: li
48; PPC64: b .LBB
49  indirectbr ptr %gotovar.4.0, [label %L5, label %L4, label %L3, label %L2, label %L1]
50
51bb3:                                              ; preds = %entry
52  %2 = getelementptr inbounds [5 x ptr], ptr @C.0.2070, i32 0, i32 %i ; <ptr> [#uses=1]
53  %gotovar.4.0.pre = load ptr, ptr %2, align 4        ; <ptr> [#uses=1]
54  br label %bb2
55
56L5:                                               ; preds = %bb2
57  br label %L4
58
59L4:                                               ; preds = %L5, %bb2
60  %res.0 = phi i32 [ 385, %L5 ], [ 35, %bb2 ]     ; <i32> [#uses=1]
61  br label %L3
62
63L3:                                               ; preds = %L4, %bb2
64  %res.1 = phi i32 [ %res.0, %L4 ], [ 5, %bb2 ]   ; <i32> [#uses=1]
65  br label %L2
66
67L2:                                               ; preds = %L3, %bb2
68  %res.2 = phi i32 [ %res.1, %L3 ], [ 1, %bb2 ]   ; <i32> [#uses=1]
69  %phitmp = mul i32 %res.2, 6                     ; <i32> [#uses=1]
70  br label %L1
71
72L1:                                               ; preds = %L2, %bb2
73  %res.3 = phi i32 [ %phitmp, %L2 ], [ 2, %bb2 ]  ; <i32> [#uses=1]
74; PIC: lwz r[[R0:[0-9]+]], .LC0-.LTOC(r30)
75; PIC-NEXT: lwz r[[R1:[0-9]+]], .LC2-.LTOC(r30)
76; PIC-NEXT: stw r[[R1]], 0(r[[R0]])
77; STATIC: li r[[R0:[0-9]+]], .Ltmp0@l
78; STATIC-NEXT: lis r[[R1:[0-9]+]], nextaddr@ha
79; STATIC-NEXT: addis r[[R0]], r[[R0]], .Ltmp0@ha
80; STATIC-NEXT: stw r[[R0]], nextaddr@l(r[[R1]]
81  store ptr blockaddress(@foo, %L5), ptr @nextaddr, align 4
82  ret i32 %res.3
83}
84