forked from OSchip/llvm-project
318 lines
15 KiB
LLVM
318 lines
15 KiB
LLVM
; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/propagate.prof | opt -analyze -branch-prob | FileCheck %s
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; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/propagate.prof | opt -analyze -branch-prob | FileCheck %s
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; Original C++ code for this test case:
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;
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; #include <stdio.h>
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;
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; long foo(int x, int y, long N) {
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; if (x < y) {
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; return y - x;
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; } else {
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; for (long i = 0; i < N; i++) {
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; if (i > N / 3)
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; x--;
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; if (i > N / 4) {
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; y++;
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; x += 3;
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; } else {
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; for (unsigned j = 0; j < 100; j++) {
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; x += j;
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; y -= 3;
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; }
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; }
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; }
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; }
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; return y * x;
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; }
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;
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; int main() {
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; int x = 5678;
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; int y = 1234;
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; long N = 9999999;
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; printf("foo(%d, %d, %ld) = %ld\n", x, y, N, foo(x, y, N));
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; return 0;
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; }
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; ModuleID = 'propagate.cc'
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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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@.str = private unnamed_addr constant [24 x i8] c"foo(%d, %d, %ld) = %ld\0A\00", align 1
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; Function Attrs: nounwind uwtable
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define i64 @_Z3fooiil(i32 %x, i32 %y, i64 %N) #0 !dbg !6 {
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entry:
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%retval = alloca i64, align 8
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%x.addr = alloca i32, align 4
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%y.addr = alloca i32, align 4
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%N.addr = alloca i64, align 8
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%i = alloca i64, align 8
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%j = alloca i64, align 8
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store i32 %x, i32* %x.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !11, metadata !12), !dbg !13
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store i32 %y, i32* %y.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %y.addr, metadata !14, metadata !12), !dbg !15
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store i64 %N, i64* %N.addr, align 8
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call void @llvm.dbg.declare(metadata i64* %N.addr, metadata !16, metadata !12), !dbg !17
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%0 = load i32, i32* %x.addr, align 4, !dbg !18
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%1 = load i32, i32* %y.addr, align 4, !dbg !20
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%cmp = icmp slt i32 %0, %1, !dbg !21
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br i1 %cmp, label %if.then, label %if.else, !dbg !22
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if.then: ; preds = %entry
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%2 = load i32, i32* %y.addr, align 4, !dbg !23
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%3 = load i32, i32* %x.addr, align 4, !dbg !25
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%sub = sub nsw i32 %2, %3, !dbg !26
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%conv = sext i32 %sub to i64, !dbg !23
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store i64 %conv, i64* %retval, align 8, !dbg !27
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br label %return, !dbg !27
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if.else: ; preds = %entry
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call void @llvm.dbg.declare(metadata i64* %i, metadata !28, metadata !12), !dbg !31
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store i64 0, i64* %i, align 8, !dbg !31
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br label %for.cond, !dbg !32
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for.cond: ; preds = %for.inc17, %if.else
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%4 = load i64, i64* %i, align 8, !dbg !33
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%5 = load i64, i64* %N.addr, align 8, !dbg !36
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%cmp1 = icmp slt i64 %4, %5, !dbg !37
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br i1 %cmp1, label %for.body, label %for.end19, !dbg !38
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for.body: ; preds = %for.cond
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%6 = load i64, i64* %i, align 8, !dbg !39
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%7 = load i64, i64* %N.addr, align 8, !dbg !42
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%div = sdiv i64 %7, 3, !dbg !43
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%cmp2 = icmp sgt i64 %6, %div, !dbg !44
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br i1 %cmp2, label %if.then3, label %if.end, !dbg !45
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; CHECK: edge for.body -> if.then3 probability is 0x51292fa6 / 0x80000000 = 63.41%
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; CHECK: edge for.body -> if.end probability is 0x2ed6d05a / 0x80000000 = 36.59%
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if.then3: ; preds = %for.body
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%8 = load i32, i32* %x.addr, align 4, !dbg !46
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%dec = add nsw i32 %8, -1, !dbg !46
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store i32 %dec, i32* %x.addr, align 4, !dbg !46
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br label %if.end, !dbg !47
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if.end: ; preds = %if.then3, %for.body
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%9 = load i64, i64* %i, align 8, !dbg !48
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%10 = load i64, i64* %N.addr, align 8, !dbg !50
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%div4 = sdiv i64 %10, 4, !dbg !51
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%cmp5 = icmp sgt i64 %9, %div4, !dbg !52
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br i1 %cmp5, label %if.then6, label %if.else7, !dbg !53
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; CHECK: edge if.end -> if.then6 probability is 0x5d89d89e / 0x80000000 = 73.08%
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; CHECK: edge if.end -> if.else7 probability is 0x22762762 / 0x80000000 = 26.92%
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if.then6: ; preds = %if.end
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%11 = load i32, i32* %y.addr, align 4, !dbg !54
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%inc = add nsw i32 %11, 1, !dbg !54
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store i32 %inc, i32* %y.addr, align 4, !dbg !54
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%12 = load i32, i32* %x.addr, align 4, !dbg !56
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%add = add nsw i32 %12, 3, !dbg !56
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store i32 %add, i32* %x.addr, align 4, !dbg !56
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br label %if.end16, !dbg !57
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if.else7: ; preds = %if.end
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call void @llvm.dbg.declare(metadata i64* %j, metadata !58, metadata !12), !dbg !62
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store i64 0, i64* %j, align 8, !dbg !62
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br label %for.cond8, !dbg !63
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for.cond8: ; preds = %for.inc, %if.else7
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%13 = load i64, i64* %j, align 8, !dbg !64
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%cmp9 = icmp slt i64 %13, 100, !dbg !67
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br i1 %cmp9, label %for.body10, label %for.end, !dbg !68
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; CHECK: edge for.cond8 -> for.body10 probability is 0x7e941a89 / 0x80000000 = 98.89% [HOT edge]
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; CHECK: edge for.cond8 -> for.end probability is 0x016be577 / 0x80000000 = 1.11%
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for.body10: ; preds = %for.cond8
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%14 = load i64, i64* %j, align 8, !dbg !69
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%15 = load i32, i32* %x.addr, align 4, !dbg !71
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%conv11 = sext i32 %15 to i64, !dbg !71
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%add12 = add nsw i64 %conv11, %14, !dbg !71
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%conv13 = trunc i64 %add12 to i32, !dbg !71
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store i32 %conv13, i32* %x.addr, align 4, !dbg !71
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%16 = load i32, i32* %y.addr, align 4, !dbg !72
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%sub14 = sub nsw i32 %16, 3, !dbg !72
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store i32 %sub14, i32* %y.addr, align 4, !dbg !72
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br label %for.inc, !dbg !73
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for.inc: ; preds = %for.body10
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%17 = load i64, i64* %j, align 8, !dbg !74
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%inc15 = add nsw i64 %17, 1, !dbg !74
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store i64 %inc15, i64* %j, align 8, !dbg !74
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br label %for.cond8, !dbg !76
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for.end: ; preds = %for.cond8
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br label %if.end16
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if.end16: ; preds = %for.end, %if.then6
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br label %for.inc17, !dbg !77
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for.inc17: ; preds = %if.end16
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%18 = load i64, i64* %i, align 8, !dbg !78
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%inc18 = add nsw i64 %18, 1, !dbg !78
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store i64 %inc18, i64* %i, align 8, !dbg !78
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br label %for.cond, !dbg !80
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for.end19: ; preds = %for.cond
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br label %if.end20
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if.end20: ; preds = %for.end19
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%19 = load i32, i32* %y.addr, align 4, !dbg !81
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%20 = load i32, i32* %x.addr, align 4, !dbg !82
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%mul = mul nsw i32 %19, %20, !dbg !83
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%conv21 = sext i32 %mul to i64, !dbg !81
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store i64 %conv21, i64* %retval, align 8, !dbg !84
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br label %return, !dbg !84
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return: ; preds = %if.end20, %if.then
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%21 = load i64, i64* %retval, align 8, !dbg !85
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ret i64 %21, !dbg !85
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: norecurse uwtable
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define i32 @main() #2 !dbg !86 {
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entry:
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%retval = alloca i32, align 4
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%x = alloca i32, align 4
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%y = alloca i32, align 4
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%N = alloca i64, align 8
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store i32 0, i32* %retval, align 4
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call void @llvm.dbg.declare(metadata i32* %x, metadata !89, metadata !12), !dbg !90
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store i32 5678, i32* %x, align 4, !dbg !90
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call void @llvm.dbg.declare(metadata i32* %y, metadata !91, metadata !12), !dbg !92
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store i32 1234, i32* %y, align 4, !dbg !92
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call void @llvm.dbg.declare(metadata i64* %N, metadata !93, metadata !12), !dbg !94
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store i64 9999999, i64* %N, align 8, !dbg !94
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%0 = load i32, i32* %x, align 4, !dbg !95
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%1 = load i32, i32* %y, align 4, !dbg !96
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%2 = load i64, i64* %N, align 8, !dbg !97
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%3 = load i32, i32* %x, align 4, !dbg !98
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%4 = load i32, i32* %y, align 4, !dbg !99
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%5 = load i64, i64* %N, align 8, !dbg !100
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%call = call i64 @_Z3fooiil(i32 %3, i32 %4, i64 %5), !dbg !101
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%call1 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i32 0, i32 0), i32 %0, i32 %1, i64 %2, i64 %call), !dbg !102
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ret i32 0, !dbg !104
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}
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declare i32 @printf(i8*, ...) #3
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attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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attributes #2 = { norecurse uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #3 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 266819)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "propagate.cc", directory: ".")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{!"clang version 3.9.0 (trunk 266819)"}
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!6 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooiil", scope: !1, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9, !10, !10, !9}
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!9 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed)
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!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!11 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !1, line: 3, type: !10)
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!12 = !DIExpression()
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!13 = !DILocation(line: 3, column: 14, scope: !6)
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!14 = !DILocalVariable(name: "y", arg: 2, scope: !6, file: !1, line: 3, type: !10)
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!15 = !DILocation(line: 3, column: 21, scope: !6)
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!16 = !DILocalVariable(name: "N", arg: 3, scope: !6, file: !1, line: 3, type: !9)
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!17 = !DILocation(line: 3, column: 29, scope: !6)
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!18 = !DILocation(line: 4, column: 7, scope: !19)
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!19 = distinct !DILexicalBlock(scope: !6, file: !1, line: 4, column: 7)
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!20 = !DILocation(line: 4, column: 11, scope: !19)
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!21 = !DILocation(line: 4, column: 9, scope: !19)
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!22 = !DILocation(line: 4, column: 7, scope: !6)
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!23 = !DILocation(line: 5, column: 12, scope: !24)
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!24 = distinct !DILexicalBlock(scope: !19, file: !1, line: 4, column: 14)
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!25 = !DILocation(line: 5, column: 16, scope: !24)
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!26 = !DILocation(line: 5, column: 14, scope: !24)
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!27 = !DILocation(line: 5, column: 5, scope: !24)
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!28 = !DILocalVariable(name: "i", scope: !29, file: !1, line: 7, type: !9)
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!29 = distinct !DILexicalBlock(scope: !30, file: !1, line: 7, column: 5)
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!30 = distinct !DILexicalBlock(scope: !19, file: !1, line: 6, column: 10)
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!31 = !DILocation(line: 7, column: 15, scope: !29)
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!32 = !DILocation(line: 7, column: 10, scope: !29)
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!33 = !DILocation(line: 7, column: 22, scope: !34)
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!34 = !DILexicalBlockFile(scope: !35, file: !1, discriminator: 2)
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!35 = distinct !DILexicalBlock(scope: !29, file: !1, line: 7, column: 5)
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!36 = !DILocation(line: 7, column: 26, scope: !34)
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!37 = !DILocation(line: 7, column: 24, scope: !34)
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!38 = !DILocation(line: 7, column: 5, scope: !34)
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!39 = !DILocation(line: 8, column: 11, scope: !40)
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!40 = distinct !DILexicalBlock(scope: !41, file: !1, line: 8, column: 11)
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!41 = distinct !DILexicalBlock(scope: !35, file: !1, line: 7, column: 34)
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!42 = !DILocation(line: 8, column: 15, scope: !40)
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!43 = !DILocation(line: 8, column: 17, scope: !40)
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!44 = !DILocation(line: 8, column: 13, scope: !40)
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!45 = !DILocation(line: 8, column: 11, scope: !41)
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!46 = !DILocation(line: 9, column: 10, scope: !40)
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!47 = !DILocation(line: 9, column: 9, scope: !40)
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!48 = !DILocation(line: 10, column: 11, scope: !49)
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!49 = distinct !DILexicalBlock(scope: !41, file: !1, line: 10, column: 11)
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!50 = !DILocation(line: 10, column: 15, scope: !49)
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!51 = !DILocation(line: 10, column: 17, scope: !49)
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!52 = !DILocation(line: 10, column: 13, scope: !49)
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!53 = !DILocation(line: 10, column: 11, scope: !41)
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!54 = !DILocation(line: 11, column: 10, scope: !55)
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!55 = distinct !DILexicalBlock(scope: !49, file: !1, line: 10, column: 22)
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!56 = !DILocation(line: 12, column: 11, scope: !55)
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!57 = !DILocation(line: 13, column: 7, scope: !55)
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!58 = !DILocalVariable(name: "j", scope: !59, file: !1, line: 14, type: !61)
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!59 = distinct !DILexicalBlock(scope: !60, file: !1, line: 14, column: 9)
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!60 = distinct !DILexicalBlock(scope: !49, file: !1, line: 13, column: 14)
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!61 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
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!62 = !DILocation(line: 14, column: 24, scope: !59)
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!63 = !DILocation(line: 14, column: 14, scope: !59)
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!64 = !DILocation(line: 14, column: 31, scope: !65)
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!65 = !DILexicalBlockFile(scope: !66, file: !1, discriminator: 2)
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!66 = distinct !DILexicalBlock(scope: !59, file: !1, line: 14, column: 9)
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!67 = !DILocation(line: 14, column: 33, scope: !65)
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!68 = !DILocation(line: 14, column: 9, scope: !65)
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!69 = !DILocation(line: 15, column: 16, scope: !70)
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!70 = distinct !DILexicalBlock(scope: !66, file: !1, line: 14, column: 45)
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!71 = !DILocation(line: 15, column: 13, scope: !70)
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!72 = !DILocation(line: 16, column: 13, scope: !70)
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!73 = !DILocation(line: 17, column: 9, scope: !70)
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!74 = !DILocation(line: 14, column: 41, scope: !75)
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!75 = !DILexicalBlockFile(scope: !66, file: !1, discriminator: 4)
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!76 = !DILocation(line: 14, column: 9, scope: !75)
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!77 = !DILocation(line: 19, column: 5, scope: !41)
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!78 = !DILocation(line: 7, column: 30, scope: !79)
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!79 = !DILexicalBlockFile(scope: !35, file: !1, discriminator: 4)
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!80 = !DILocation(line: 7, column: 5, scope: !79)
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!81 = !DILocation(line: 21, column: 10, scope: !6)
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!82 = !DILocation(line: 21, column: 14, scope: !6)
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!83 = !DILocation(line: 21, column: 12, scope: !6)
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!84 = !DILocation(line: 21, column: 3, scope: !6)
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!85 = !DILocation(line: 22, column: 1, scope: !6)
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!86 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 24, type: !87, isLocal: false, isDefinition: true, scopeLine: 24, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
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!87 = !DISubroutineType(types: !88)
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!88 = !{!10}
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!89 = !DILocalVariable(name: "x", scope: !86, file: !1, line: 25, type: !10)
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!90 = !DILocation(line: 25, column: 7, scope: !86)
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!91 = !DILocalVariable(name: "y", scope: !86, file: !1, line: 26, type: !10)
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!92 = !DILocation(line: 26, column: 7, scope: !86)
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!93 = !DILocalVariable(name: "N", scope: !86, file: !1, line: 27, type: !9)
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!94 = !DILocation(line: 27, column: 8, scope: !86)
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!95 = !DILocation(line: 28, column: 38, scope: !86)
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!96 = !DILocation(line: 28, column: 41, scope: !86)
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!97 = !DILocation(line: 28, column: 44, scope: !86)
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!98 = !DILocation(line: 28, column: 51, scope: !86)
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!99 = !DILocation(line: 28, column: 54, scope: !86)
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!100 = !DILocation(line: 28, column: 57, scope: !86)
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!101 = !DILocation(line: 28, column: 47, scope: !86)
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!102 = !DILocation(line: 28, column: 3, scope: !103)
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!103 = !DILexicalBlockFile(scope: !86, file: !1, discriminator: 2)
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!104 = !DILocation(line: 29, column: 3, scope: !86)
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