xref: /aosp_15_r20/external/llvm/test/CodeGen/ARM/ifcvt-branch-weight.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=thumbv8 -print-machineinstrs=if-converter -arm-atomic-cfg-tidy=0 -o /dev/null 2>&1 | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker%struct.S = type { i8* (i8*)*, [1 x i8] }
4*9880d681SAndroid Build Coastguard Workerdefine internal zeroext i8 @bar(%struct.S* %x, %struct.S* nocapture %y) nounwind readonly {
5*9880d681SAndroid Build Coastguard Workerentry:
6*9880d681SAndroid Build Coastguard Worker  %0 = getelementptr inbounds %struct.S, %struct.S* %x, i32 0, i32 1, i32 0
7*9880d681SAndroid Build Coastguard Worker  %1 = load i8, i8* %0, align 1
8*9880d681SAndroid Build Coastguard Worker  %2 = zext i8 %1 to i32
9*9880d681SAndroid Build Coastguard Worker  %3 = and i32 %2, 112
10*9880d681SAndroid Build Coastguard Worker  %4 = icmp eq i32 %3, 0
11*9880d681SAndroid Build Coastguard Worker  br i1 %4, label %return, label %bb
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Workerbb:
14*9880d681SAndroid Build Coastguard Worker  %5 = getelementptr inbounds %struct.S, %struct.S* %y, i32 0, i32 1, i32 0
15*9880d681SAndroid Build Coastguard Worker  %6 = load i8, i8* %5, align 1
16*9880d681SAndroid Build Coastguard Worker  %7 = zext i8 %6 to i32
17*9880d681SAndroid Build Coastguard Worker  %8 = and i32 %7, 112
18*9880d681SAndroid Build Coastguard Worker  %9 = icmp eq i32 %8, 0
19*9880d681SAndroid Build Coastguard Worker  br i1 %9, label %return, label %bb2
20*9880d681SAndroid Build Coastguard Worker
21*9880d681SAndroid Build Coastguard Worker; CHECK: BB#2: derived from LLVM BB %bb2
22*9880d681SAndroid Build Coastguard Worker; CHECK: Successors according to CFG: BB#3({{[0-9a-fx/= ]+}}50.00%) BB#4({{[0-9a-fx/= ]+}}50.00%)
23*9880d681SAndroid Build Coastguard Worker
24*9880d681SAndroid Build Coastguard Workerbb2:
25*9880d681SAndroid Build Coastguard Worker  %v10 = icmp eq i32 %3, 16
26*9880d681SAndroid Build Coastguard Worker  br i1 %v10, label %bb4, label %bb3, !prof !0
27*9880d681SAndroid Build Coastguard Worker
28*9880d681SAndroid Build Coastguard Workerbb3:
29*9880d681SAndroid Build Coastguard Worker  %v11 = icmp eq i32 %8, 16
30*9880d681SAndroid Build Coastguard Worker  br i1 %v11, label %bb4, label %return, !prof !1
31*9880d681SAndroid Build Coastguard Worker
32*9880d681SAndroid Build Coastguard Workerbb4:
33*9880d681SAndroid Build Coastguard Worker  %v12 = ptrtoint %struct.S* %x to i32
34*9880d681SAndroid Build Coastguard Worker  %phitmp = trunc i32 %v12 to i8
35*9880d681SAndroid Build Coastguard Worker  ret i8 %phitmp
36*9880d681SAndroid Build Coastguard Worker
37*9880d681SAndroid Build Coastguard Workerreturn:
38*9880d681SAndroid Build Coastguard Worker  ret i8 1
39*9880d681SAndroid Build Coastguard Worker}
40*9880d681SAndroid Build Coastguard Worker
41*9880d681SAndroid Build Coastguard Worker!0 = !{!"branch_weights", i32 4, i32 12}
42*9880d681SAndroid Build Coastguard Worker!1 = !{!"branch_weights", i32 8, i32 16}
43