52 lines · plain
1; RUN: opt < %s -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s2 3declare void @g(i32)4 5; Check correctness of reported probabilities in case of multiple edges between6; basic blocks. In this case sum of probabilities over all edges should be7; 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 %bb027 i32 3, label %bb028 i32 6, label %bb029 i32 1, label %bb130 i32 4, label %bb131 i32 7, label %bb132 i32 2, label %bb233 i32 5, label %bb234 i32 8, label %bb235 ]36 37bb0: ; preds = %entry, %entry, %entry38 tail call void @g(i32 0)39 br label %return40 41bb1: ; preds = %entry, %entry, %entry42 tail call void @g(i32 1)43 br label %return44 45bb2: ; preds = %entry, %entry, %entry46 tail call void @g(i32 2)47 br label %return48 49return: ; preds = %bb2, %bb1, %bb0, %entry50 ret void51}52