xref: /aosp_15_r20/external/llvm/test/Analysis/BranchProbabilityInfo/deopt-intrinsic.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -analyze -branch-prob < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Workerdeclare i32 @llvm.experimental.deoptimize.i32(...)
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Workerdefine i32 @test1(i32 %a, i32 %b) {
7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: Printing analysis {{.*}} for function 'test1':
8*9880d681SAndroid Build Coastguard Workerentry:
9*9880d681SAndroid Build Coastguard Worker  %cond = icmp eq i32 %a, 42
10*9880d681SAndroid Build Coastguard Worker  br i1 %cond, label %exit, label %deopt
11*9880d681SAndroid Build Coastguard Worker
12*9880d681SAndroid Build Coastguard Worker; CHECK:  edge entry -> exit probability is 0x7ffff800 / 0x80000000 = 100.00% [HOT edge]
13*9880d681SAndroid Build Coastguard Worker; CHECK:  edge entry -> deopt probability is 0x00000800 / 0x80000000 = 0.00%
14*9880d681SAndroid Build Coastguard Worker
15*9880d681SAndroid Build Coastguard Workerdeopt:
16*9880d681SAndroid Build Coastguard Worker  %rval = call i32(...) @llvm.experimental.deoptimize.i32() [ "deopt"() ]
17*9880d681SAndroid Build Coastguard Worker  ret i32 %rval
18*9880d681SAndroid Build Coastguard Worker
19*9880d681SAndroid Build Coastguard Workerexit:
20*9880d681SAndroid Build Coastguard Worker  ret i32 %b
21*9880d681SAndroid Build Coastguard Worker}
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