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