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test/Transforms/PGOProfile/criticaledge.ll
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| ; RUN: opt < %s -pgo-instr-gen -S | FileCheck %s --check-prefix=GEN | |||||
| ; RUN: llvm-profdata merge %S/Inputs/criticaledge.proftext -o %T/criticaledge.profdata | |||||
| ; RUN: opt < %s -pgo-instr-use -pgo-test-profile-file=%T/criticaledge.profdata -S | FileCheck %s --check-prefix=USE | |||||
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" | |||||
| target triple = "x86_64-unknown-linux-gnu" | |||||
| ; GEN: @__llvm_profile_name_test_criticalEdge = private constant [17 x i8] c"test_criticalEdge" | |||||
| ; GEN: @"__llvm_profile_name_<stdin>:bar" = private constant [11 x i8] c"<stdin>:bar" | |||||
| define i32 @test_criticalEdge(i32 %i, i32 %j) { | |||||
| entry: | |||||
| ; CHECK: entry: | |||||
| ; GEN-NOT: call void @llvm.instrprof.increment | |||||
| switch i32 %i, label %sw.default [ | |||||
| i32 1, label %sw.bb | |||||
| i32 2, label %sw.bb1 | |||||
| i32 3, label %sw.bb2 | |||||
| i32 4, label %sw.bb2 | |||||
| ; CHECK: i32 3, label %entry.sw.bb2_crit_edge | |||||
| ; CHECK: i32 4, label %entry.sw.bb2_crit_edge1 | |||||
| i32 5, label %sw.bb2 | |||||
| ] | |||||
| ; USE: ] | |||||
| ; USE-SAME: !prof ![[BW_SWITCH:[0-9]+]] | |||||
| ; CHECK: entry.sw.bb2_crit_edge1: | |||||
| ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__llvm_profile_name_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 1) | |||||
| ; CHECK: br label %sw.bb2 | |||||
| ; CHECK: entry.sw.bb2_crit_edge: | |||||
| ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__llvm_profile_name_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 0) | |||||
| ; CHECK: br label %sw.bb2 | |||||
| sw.bb: | |||||
| ; GEN: sw.bb: | |||||
| ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__llvm_profile_name_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 5) | |||||
| %call = call i32 @bar(i32 2) | |||||
| br label %sw.epilog | |||||
| sw.bb1: | |||||
| ; GEN: sw.bb1: | |||||
| ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__llvm_profile_name_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 4) | |||||
| %call2 = call i32 @bar(i32 1024) | |||||
| br label %sw.epilog | |||||
| sw.bb2: | |||||
| ; GEN: sw.bb2: | |||||
| ; GEN-NOT: call void @llvm.instrprof.increment | |||||
| %cmp = icmp eq i32 %j, 2 | |||||
| br i1 %cmp, label %if.then, label %if.end | |||||
| ; USE: br i1 %cmp, label %if.then, label %if.end | |||||
| ; USE-SAME: !prof ![[BW_SW_BB2:[0-9]+]] | |||||
| if.then: | |||||
| ; GEN: if.then: | |||||
| ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__llvm_profile_name_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 2) | |||||
| %call4 = call i32 @bar(i32 4) | |||||
| br label %return | |||||
| if.end: | |||||
| ; GEN: if.end: | |||||
| ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__llvm_profile_name_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 3) | |||||
| %call5 = call i32 @bar(i32 8) | |||||
| br label %sw.epilog | |||||
| sw.default: | |||||
| ; GEN: sw.default: | |||||
| ; GEN-NOT: call void @llvm.instrprof.increment | |||||
| %call6 = call i32 @bar(i32 32) | |||||
| %cmp7 = icmp sgt i32 %j, 10 | |||||
| br i1 %cmp7, label %if.then8, label %if.end9 | |||||
| ; USE: br i1 %cmp7, label %if.then8, label %if.end9 | |||||
| ; USE-SAME: !prof ![[BW_SW_DEFAULT:[0-9]+]] | |||||
| if.then8: | |||||
| ; GEN: if.then8: | |||||
| ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__llvm_profile_name_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 7) | |||||
| %add = add nsw i32 %call6, 10 | |||||
| br label %if.end9 | |||||
| if.end9: | |||||
| ; GEN: if.end9: | |||||
| ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__llvm_profile_name_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 6) | |||||
| %res.0 = phi i32 [ %add, %if.then8 ], [ %call6, %sw.default ] | |||||
| br label %sw.epilog | |||||
| sw.epilog: | |||||
| ; GEN: sw.epilog: | |||||
| ; GEN-NOT: call void @llvm.instrprof.increment | |||||
| %res.1 = phi i32 [ %res.0, %if.end9 ], [ %call5, %if.end ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ] | |||||
| br label %return | |||||
| return: | |||||
| ; GEN: return: | |||||
| ; GEN-NOT: call void @llvm.instrprof.increment | |||||
| %retval = phi i32 [ %res.1, %sw.epilog ], [ %call4, %if.then ] | |||||
| ret i32 %retval | |||||
| } | |||||
| define internal i32 @bar(i32 %i) { | |||||
| entry: | |||||
| ; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @"__llvm_profile_name_<stdin>:bar", i32 0, i32 0), i64 12884901887, i32 1, i32 0) | |||||
| ret i32 %i | |||||
| } | |||||
| ; USE: ![[BW_SWITCH]] = !{!"branch_weights", i32 2, i32 1, i32 0, i32 2, i32 1, i32 1} | |||||
| ; USE: ![[BW_SW_BB2]] = !{!"branch_weights", i32 2, i32 2} | |||||
| ; USE: ![[BW_SW_DEFAULT]] = !{!"branch_weights", i32 1, i32 1} | |||||