xref: /aosp_15_r20/external/llvm/test/CodeGen/ARM/indirectbr.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -relocation-model=pic -mtriple=armv6-apple-darwin | FileCheck %s -check-prefix=ARM
2*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -relocation-model=pic -mtriple=thumbv6-apple-darwin | FileCheck %s -check-prefix=THUMB
3*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -relocation-model=static -mtriple=thumbv7-apple-darwin | FileCheck %s -check-prefix=THUMB2
4*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -relocation-model=static -mtriple=thumbv8-apple-darwin | FileCheck %s -check-prefix=THUMB2
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Worker@nextaddr = global i8* null                       ; <i8**> [#uses=2]
7*9880d681SAndroid Build Coastguard Worker@C.0.2070 = private constant [5 x i8*] [i8* blockaddress(@foo, %L1), i8* blockaddress(@foo, %L2), i8* blockaddress(@foo, %L3), i8* blockaddress(@foo, %L4), i8* blockaddress(@foo, %L5)] ; <[5 x i8*]*> [#uses=1]
8*9880d681SAndroid Build Coastguard Worker
9*9880d681SAndroid Build Coastguard Workerdefine internal i32 @foo(i32 %i) nounwind {
10*9880d681SAndroid Build Coastguard Worker; ARM-LABEL: foo:
11*9880d681SAndroid Build Coastguard Worker; THUMB-LABEL: foo:
12*9880d681SAndroid Build Coastguard Worker; THUMB2-LABEL: foo:
13*9880d681SAndroid Build Coastguard Workerentry:
14*9880d681SAndroid Build Coastguard Worker  ; _nextaddr gets CSEed for use later on.
15*9880d681SAndroid Build Coastguard Worker; THUMB: ldr r[[NEXTADDR_REG:[0-9]+]], [[NEXTADDR_CPI:LCPI0_[0-9]+]]
16*9880d681SAndroid Build Coastguard Worker; THUMB: [[NEXTADDR_PCBASE:LPC0_[0-9]]]:
17*9880d681SAndroid Build Coastguard Worker; THUMB: add r[[NEXTADDR_REG]], pc
18*9880d681SAndroid Build Coastguard Worker
19*9880d681SAndroid Build Coastguard Worker  %0 = load i8*, i8** @nextaddr, align 4               ; <i8*> [#uses=2]
20*9880d681SAndroid Build Coastguard Worker  %1 = icmp eq i8* %0, null                       ; <i1> [#uses=1]
21*9880d681SAndroid Build Coastguard Worker; indirect branch gets duplicated here
22*9880d681SAndroid Build Coastguard Worker; ARM: bx
23*9880d681SAndroid Build Coastguard Worker; THUMB: mov pc,
24*9880d681SAndroid Build Coastguard Worker; THUMB2: mov pc,
25*9880d681SAndroid Build Coastguard Worker  br i1 %1, label %bb3, label %bb2
26*9880d681SAndroid Build Coastguard Worker
27*9880d681SAndroid Build Coastguard Workerbb2:                                              ; preds = %entry, %bb3
28*9880d681SAndroid Build Coastguard Worker  %gotovar.4.0 = phi i8* [ %gotovar.4.0.pre, %bb3 ], [ %0, %entry ] ; <i8*> [#uses=1]
29*9880d681SAndroid Build Coastguard Worker; ARM: bx
30*9880d681SAndroid Build Coastguard Worker; THUMB: mov pc,
31*9880d681SAndroid Build Coastguard Worker  indirectbr i8* %gotovar.4.0, [label %L5, label %L4, label %L3, label %L2, label %L1]
32*9880d681SAndroid Build Coastguard Worker
33*9880d681SAndroid Build Coastguard Workerbb3:                                              ; preds = %entry
34*9880d681SAndroid Build Coastguard Worker  %2 = getelementptr inbounds [5 x i8*], [5 x i8*]* @C.0.2070, i32 0, i32 %i ; <i8**> [#uses=1]
35*9880d681SAndroid Build Coastguard Worker  %gotovar.4.0.pre = load i8*, i8** %2, align 4        ; <i8*> [#uses=1]
36*9880d681SAndroid Build Coastguard Worker  br label %bb2
37*9880d681SAndroid Build Coastguard Worker
38*9880d681SAndroid Build Coastguard WorkerL5:                                               ; preds = %bb2
39*9880d681SAndroid Build Coastguard Worker  br label %L4
40*9880d681SAndroid Build Coastguard Worker
41*9880d681SAndroid Build Coastguard WorkerL4:                                               ; preds = %L5, %bb2
42*9880d681SAndroid Build Coastguard Worker  %res.0 = phi i32 [ 385, %L5 ], [ 35, %bb2 ]     ; <i32> [#uses=1]
43*9880d681SAndroid Build Coastguard Worker  br label %L3
44*9880d681SAndroid Build Coastguard Worker
45*9880d681SAndroid Build Coastguard WorkerL3:                                               ; preds = %L4, %bb2
46*9880d681SAndroid Build Coastguard Worker  %res.1 = phi i32 [ %res.0, %L4 ], [ 5, %bb2 ]   ; <i32> [#uses=1]
47*9880d681SAndroid Build Coastguard Worker  br label %L2
48*9880d681SAndroid Build Coastguard Worker
49*9880d681SAndroid Build Coastguard WorkerL2:                                               ; preds = %L3, %bb2
50*9880d681SAndroid Build Coastguard Worker; THUMB: muls
51*9880d681SAndroid Build Coastguard Worker  %res.2 = phi i32 [ %res.1, %L3 ], [ 1, %bb2 ]   ; <i32> [#uses=1]
52*9880d681SAndroid Build Coastguard Worker  %phitmp = mul i32 %res.2, 6                     ; <i32> [#uses=1]
53*9880d681SAndroid Build Coastguard Worker  br label %L1
54*9880d681SAndroid Build Coastguard Worker
55*9880d681SAndroid Build Coastguard WorkerL1:                                               ; preds = %L2, %bb2
56*9880d681SAndroid Build Coastguard Worker  %res.3 = phi i32 [ %phitmp, %L2 ], [ 2, %bb2 ]  ; <i32> [#uses=1]
57*9880d681SAndroid Build Coastguard Worker; ARM-LABEL: %L1
58*9880d681SAndroid Build Coastguard Worker; ARM: ldr [[R1:r[0-9]+]], LCPI
59*9880d681SAndroid Build Coastguard Worker; ARM: add [[R1b:r[0-9]+]], pc, [[R1]]
60*9880d681SAndroid Build Coastguard Worker; ARM: str [[R1b]]
61*9880d681SAndroid Build Coastguard Worker
62*9880d681SAndroid Build Coastguard Worker; THUMB-LABEL: %L1
63*9880d681SAndroid Build Coastguard Worker; THUMB: ldr [[R2:r[0-9]+]], LCPI
64*9880d681SAndroid Build Coastguard Worker; THUMB: add [[R2]], pc
65*9880d681SAndroid Build Coastguard Worker; THUMB: str [[R2]], [r[[NEXTADDR_REG]]]
66*9880d681SAndroid Build Coastguard Worker; THUMB2-LABEL: %L1
67*9880d681SAndroid Build Coastguard Worker; THUMB2: ldr [[R2:r[0-9]+]], LCPI
68*9880d681SAndroid Build Coastguard Worker; THUMB2-NEXT: str{{(.w)?}} [[R2]]
69*9880d681SAndroid Build Coastguard Worker  store i8* blockaddress(@foo, %L5), i8** @nextaddr, align 4
70*9880d681SAndroid Build Coastguard Worker  ret i32 %res.3
71*9880d681SAndroid Build Coastguard Worker}
72*9880d681SAndroid Build Coastguard Worker; ARM: .long Ltmp0-(LPC{{.*}}+8)
73*9880d681SAndroid Build Coastguard Worker; THUMB: .long Ltmp0-(LPC{{.*}}+4)
74*9880d681SAndroid Build Coastguard Worker; THUMB: .long _nextaddr-([[NEXTADDR_PCBASE]]+4)
75*9880d681SAndroid Build Coastguard Worker; THUMB2: .long Ltmp0
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