1; RUN: opt < %s -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s 2 3declare void @g(i32) 4 5; Check correctness of reported probabilities in case of multiple edges between 6; basic blocks. In this case sum of probabilities over all edges should be 7; returned by BranchProbabilityInfo::getEdgeProbability. 8 9define void @test1(i32 %x) { 10;CHECK: edge %entry -> %return probability is 0x0ccccccd / 0x80000000 = 10.00% 11;CHECK: edge %entry -> %bb0 probability is 0x26666666 / 0x80000000 = 30.00% 12;CHECK: edge %entry -> %bb0 probability is 0x26666666 / 0x80000000 = 30.00% 13;CHECK: edge %entry -> %bb0 probability is 0x26666666 / 0x80000000 = 30.00% 14;CHECK: edge %entry -> %bb1 probability is 0x26666666 / 0x80000000 = 30.00% 15;CHECK: edge %entry -> %bb1 probability is 0x26666666 / 0x80000000 = 30.00% 16;CHECK: edge %entry -> %bb1 probability is 0x26666666 / 0x80000000 = 30.00% 17;CHECK: edge %entry -> %bb2 probability is 0x26666666 / 0x80000000 = 30.00% 18;CHECK: edge %entry -> %bb2 probability is 0x26666666 / 0x80000000 = 30.00% 19;CHECK: edge %entry -> %bb2 probability is 0x26666666 / 0x80000000 = 30.00% 20;CHECK: edge %bb0 -> %return probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge] 21;CHECK: edge %bb1 -> %return probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge] 22;CHECK: edge %bb2 -> %return probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge] 23 24entry: 25 switch i32 %x, label %return [ 26 i32 0, label %bb0 27 i32 3, label %bb0 28 i32 6, label %bb0 29 i32 1, label %bb1 30 i32 4, label %bb1 31 i32 7, label %bb1 32 i32 2, label %bb2 33 i32 5, label %bb2 34 i32 8, label %bb2 35 ] 36 37bb0: ; preds = %entry, %entry, %entry 38 tail call void @g(i32 0) 39 br label %return 40 41bb1: ; preds = %entry, %entry, %entry 42 tail call void @g(i32 1) 43 br label %return 44 45bb2: ; preds = %entry, %entry, %entry 46 tail call void @g(i32 2) 47 br label %return 48 49return: ; preds = %bb2, %bb1, %bb0, %entry 50 ret void 51} 52