xref: /aosp_15_r20/external/llvm/test/CodeGen/AArch64/arm64-fast-isel-indirectbr.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc -O0 -fast-isel-abort=1 -verify-machineinstrs -mtriple=arm64-apple-darwin < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker@fn.table = internal global [2 x i8*] [i8* blockaddress(@fn, %ZERO), i8* blockaddress(@fn, %ONE)], align 8
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Workerdefine i32 @fn(i32 %target) nounwind {
6*9880d681SAndroid Build Coastguard Workerentry:
7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: fn
8*9880d681SAndroid Build Coastguard Worker  %retval = alloca i32, align 4
9*9880d681SAndroid Build Coastguard Worker  %target.addr = alloca i32, align 4
10*9880d681SAndroid Build Coastguard Worker  store i32 %target, i32* %target.addr, align 4
11*9880d681SAndroid Build Coastguard Worker  %0 = load i32, i32* %target.addr, align 4
12*9880d681SAndroid Build Coastguard Worker  %idxprom = zext i32 %0 to i64
13*9880d681SAndroid Build Coastguard Worker  %arrayidx = getelementptr inbounds [2 x i8*], [2 x i8*]* @fn.table, i32 0, i64 %idxprom
14*9880d681SAndroid Build Coastguard Worker  %1 = load i8*, i8** %arrayidx, align 8
15*9880d681SAndroid Build Coastguard Worker  br label %indirectgoto
16*9880d681SAndroid Build Coastguard Worker
17*9880d681SAndroid Build Coastguard WorkerZERO:                                             ; preds = %indirectgoto
18*9880d681SAndroid Build Coastguard Worker; CHECK: LBB0_1
19*9880d681SAndroid Build Coastguard Worker  store i32 0, i32* %retval
20*9880d681SAndroid Build Coastguard Worker  br label %return
21*9880d681SAndroid Build Coastguard Worker
22*9880d681SAndroid Build Coastguard WorkerONE:                                              ; preds = %indirectgoto
23*9880d681SAndroid Build Coastguard Worker; CHECK: LBB0_2
24*9880d681SAndroid Build Coastguard Worker  store i32 1, i32* %retval
25*9880d681SAndroid Build Coastguard Worker  br label %return
26*9880d681SAndroid Build Coastguard Worker
27*9880d681SAndroid Build Coastguard Workerreturn:                                           ; preds = %ONE, %ZERO
28*9880d681SAndroid Build Coastguard Worker  %2 = load i32, i32* %retval
29*9880d681SAndroid Build Coastguard Worker  ret i32 %2
30*9880d681SAndroid Build Coastguard Worker
31*9880d681SAndroid Build Coastguard Workerindirectgoto:                                     ; preds = %entry
32*9880d681SAndroid Build Coastguard Worker; CHECK:      ldr [[REG:x[0-9]+]], [sp]
33*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: br [[REG]]
34*9880d681SAndroid Build Coastguard Worker  %indirect.goto.dest = phi i8* [ %1, %entry ]
35*9880d681SAndroid Build Coastguard Worker  indirectbr i8* %indirect.goto.dest, [label %ZERO, label %ONE]
36*9880d681SAndroid Build Coastguard Worker}
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