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llvm-6502/test/Transforms/SampleProfile/propagate.ll
David Blaikie 32b845d223 [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 
See r230786 and r230794 for similar changes to gep and load
respectively.

Call is a bit different because it often doesn't have a single explicit
type - usually the type is deduced from the arguments, and just the
return type is explicit. In those cases there's no need to change the
IR.

When that's not the case, the IR usually contains the pointer type of
the first operand - but since typed pointers are going away, that
representation is insufficient so I'm just stripping the "pointerness"
of the explicit type away.

This does make the IR a bit weird - it /sort of/ reads like the type of
the first operand: "call void () %x(" but %x is actually of type "void
()*" and will eventually be just of type "ptr". But this seems not too
bad and I don't think it would benefit from repeating the type
("void (), void () * %x(" and then eventually "void (), ptr %x(") as has
been done with gep and load.

This also has a side benefit: since the explicit type is no longer a
pointer, there's no ambiguity between an explicit type and a function
that returns a function pointer. Previously this case needed an explicit
type (eg: a function returning a void() function was written as
"call void () () * @x(" rather than "call void () * @x(" because of the
ambiguity between a function returning a pointer to a void() function
and a function returning void).

No ambiguity means even function pointer return types can just be
written alone, without writing the whole function's type.

This leaves /only/ the varargs case where the explicit type is required.

Given the special type syntax in call instructions, the regex-fu used
for migration was a bit more involved in its own unique way (as every
one of these is) so here it is. Use it in conjunction with the apply.sh
script and associated find/xargs commands I've provided in rr230786 to
migrate your out of tree tests. Do let me know if any of this doesn't
cover your cases & we can iterate on a more general script/regexes to
help others with out of tree tests.

About 9 test cases couldn't be automatically migrated - half of those
were functions returning function pointers, where I just had to manually
delete the function argument types now that we didn't need an explicit
function type there. The other half were typedefs of function types used
in calls - just had to manually drop the * from those.

import fileinput
import sys
import re

pat = re.compile(r'((?:=|:|^|\s)call\s(?:[^@]*?))(\s*$|\s*(?:(?:\[\[[a-zA-Z0-9_]+\]\]|[@%](?:(")?[\\\?@a-zA-Z0-9_.]*?(?(3)"|)|{{.*}}))(?:\(|$)|undef|inttoptr|bitcast|null|asm).*$)')
addrspace_end = re.compile(r"addrspace\(\d+\)\s*\*$")
func_end = re.compile("(?:void.*|\)\s*)\*$")

def conv(match, line):
  if not match or re.search(addrspace_end, match.group(1)) or not re.search(func_end, match.group(1)):
    return line
  return line[:match.start()] + match.group(1)[:match.group(1).rfind('*')].rstrip() + match.group(2) + line[match.end():]

for line in sys.stdin:
  sys.stdout.write(conv(re.search(pat, line), line))

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235145 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-16 23:24:18 +00:00

244 lines
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; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/propagate.prof | opt -analyze -branch-prob | FileCheck %s
; Original C++ code for this test case:
;
; #include <stdio.h>
;
; long foo(int x, int y, long N) {
; if (x < y) {
; return y - x;
; } else {
; for (long i = 0; i < N; i++) {
; if (i > N / 3)
; x--;
; if (i > N / 4) {
; y++;
; x += 3;
; } else {
; for (unsigned j = 0; j < i; j++) {
; x += j;
; y -= 3;
; }
; }
; }
; }
; return y * x;
; }
;
; int main() {
; int x = 5678;
; int y = 1234;
; long N = 999999;
; printf("foo(%d, %d, %ld) = %ld\n", x, y, N, foo(x, y, N));
; return 0;
; }
; ModuleID = 'propagate.cc'
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@.str = private unnamed_addr constant [24 x i8] c"foo(%d, %d, %ld) = %ld\0A\00", align 1
; Function Attrs: nounwind uwtable
define i64 @_Z3fooiil(i32 %x, i32 %y, i64 %N) #0 {
entry:
%retval = alloca i64, align 8
%x.addr = alloca i32, align 4
%y.addr = alloca i32, align 4
%N.addr = alloca i64, align 8
%i = alloca i64, align 8
%j = alloca i32, align 4
store i32 %x, i32* %x.addr, align 4
store i32 %y, i32* %y.addr, align 4
store i64 %N, i64* %N.addr, align 8
%0 = load i32, i32* %x.addr, align 4, !dbg !11
%1 = load i32, i32* %y.addr, align 4, !dbg !11
%cmp = icmp slt i32 %0, %1, !dbg !11
br i1 %cmp, label %if.then, label %if.else, !dbg !11
if.then: ; preds = %entry
%2 = load i32, i32* %y.addr, align 4, !dbg !13
%3 = load i32, i32* %x.addr, align 4, !dbg !13
%sub = sub nsw i32 %2, %3, !dbg !13
%conv = sext i32 %sub to i64, !dbg !13
store i64 %conv, i64* %retval, !dbg !13
br label %return, !dbg !13
if.else: ; preds = %entry
store i64 0, i64* %i, align 8, !dbg !15
br label %for.cond, !dbg !15
for.cond: ; preds = %for.inc16, %if.else
%4 = load i64, i64* %i, align 8, !dbg !15
%5 = load i64, i64* %N.addr, align 8, !dbg !15
%cmp1 = icmp slt i64 %4, %5, !dbg !15
br i1 %cmp1, label %for.body, label %for.end18, !dbg !15
; CHECK: edge for.cond -> for.body probability is 10 / 11 = 90.9091% [HOT edge]
; CHECK: edge for.cond -> for.end18 probability is 1 / 11 = 9.09091%
for.body: ; preds = %for.cond
%6 = load i64, i64* %i, align 8, !dbg !18
%7 = load i64, i64* %N.addr, align 8, !dbg !18
%div = sdiv i64 %7, 3, !dbg !18
%cmp2 = icmp sgt i64 %6, %div, !dbg !18
br i1 %cmp2, label %if.then3, label %if.end, !dbg !18
; CHECK: edge for.body -> if.then3 probability is 1 / 5 = 20%
; CHECK: edge for.body -> if.end probability is 4 / 5 = 80%
if.then3: ; preds = %for.body
%8 = load i32, i32* %x.addr, align 4, !dbg !21
%dec = add nsw i32 %8, -1, !dbg !21
store i32 %dec, i32* %x.addr, align 4, !dbg !21
br label %if.end, !dbg !21
if.end: ; preds = %if.then3, %for.body
%9 = load i64, i64* %i, align 8, !dbg !22
%10 = load i64, i64* %N.addr, align 8, !dbg !22
%div4 = sdiv i64 %10, 4, !dbg !22
%cmp5 = icmp sgt i64 %9, %div4, !dbg !22
br i1 %cmp5, label %if.then6, label %if.else7, !dbg !22
; CHECK: edge if.end -> if.then6 probability is 3 / 6342 = 0.0473037%
; CHECK: edge if.end -> if.else7 probability is 6339 / 6342 = 99.9527% [HOT edge]
if.then6: ; preds = %if.end
%11 = load i32, i32* %y.addr, align 4, !dbg !24
%inc = add nsw i32 %11, 1, !dbg !24
store i32 %inc, i32* %y.addr, align 4, !dbg !24
%12 = load i32, i32* %x.addr, align 4, !dbg !26
%add = add nsw i32 %12, 3, !dbg !26
store i32 %add, i32* %x.addr, align 4, !dbg !26
br label %if.end15, !dbg !27
if.else7: ; preds = %if.end
store i32 0, i32* %j, align 4, !dbg !28
br label %for.cond8, !dbg !28
for.cond8: ; preds = %for.inc, %if.else7
%13 = load i32, i32* %j, align 4, !dbg !28
%conv9 = zext i32 %13 to i64, !dbg !28
%14 = load i64, i64* %i, align 8, !dbg !28
%cmp10 = icmp slt i64 %conv9, %14, !dbg !28
br i1 %cmp10, label %for.body11, label %for.end, !dbg !28
; CHECK: edge for.cond8 -> for.body11 probability is 16191 / 16192 = 99.9938% [HOT edge]
; CHECK: edge for.cond8 -> for.end probability is 1 / 16192 = 0.00617589%
for.body11: ; preds = %for.cond8
%15 = load i32, i32* %j, align 4, !dbg !31
%16 = load i32, i32* %x.addr, align 4, !dbg !31
%add12 = add i32 %16, %15, !dbg !31
store i32 %add12, i32* %x.addr, align 4, !dbg !31
%17 = load i32, i32* %y.addr, align 4, !dbg !33
%sub13 = sub nsw i32 %17, 3, !dbg !33
store i32 %sub13, i32* %y.addr, align 4, !dbg !33
br label %for.inc, !dbg !34
for.inc: ; preds = %for.body11
%18 = load i32, i32* %j, align 4, !dbg !28
%inc14 = add i32 %18, 1, !dbg !28
store i32 %inc14, i32* %j, align 4, !dbg !28
br label %for.cond8, !dbg !28
for.end: ; preds = %for.cond8
br label %if.end15
if.end15: ; preds = %for.end, %if.then6
br label %for.inc16, !dbg !35
for.inc16: ; preds = %if.end15
%19 = load i64, i64* %i, align 8, !dbg !15
%inc17 = add nsw i64 %19, 1, !dbg !15
store i64 %inc17, i64* %i, align 8, !dbg !15
br label %for.cond, !dbg !15
for.end18: ; preds = %for.cond
br label %if.end19
if.end19: ; preds = %for.end18
%20 = load i32, i32* %y.addr, align 4, !dbg !36
%21 = load i32, i32* %x.addr, align 4, !dbg !36
%mul = mul nsw i32 %20, %21, !dbg !36
%conv20 = sext i32 %mul to i64, !dbg !36
store i64 %conv20, i64* %retval, !dbg !36
br label %return, !dbg !36
return: ; preds = %if.end19, %if.then
%22 = load i64, i64* %retval, !dbg !37
ret i64 %22, !dbg !37
}
; Function Attrs: uwtable
define i32 @main() #1 {
entry:
%retval = alloca i32, align 4
%x = alloca i32, align 4
%y = alloca i32, align 4
%N = alloca i64, align 8
store i32 0, i32* %retval
store i32 5678, i32* %x, align 4, !dbg !38
store i32 1234, i32* %y, align 4, !dbg !39
store i64 999999, i64* %N, align 8, !dbg !40
%0 = load i32, i32* %x, align 4, !dbg !41
%1 = load i32, i32* %y, align 4, !dbg !41
%2 = load i64, i64* %N, align 8, !dbg !41
%3 = load i32, i32* %x, align 4, !dbg !41
%4 = load i32, i32* %y, align 4, !dbg !41
%5 = load i64, i64* %N, align 8, !dbg !41
%call = call i64 @_Z3fooiil(i32 %3, i32 %4, i64 %5), !dbg !41
%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 !41
ret i32 0, !dbg !42
}
declare i32 @printf(i8*, ...) #2
attributes #0 = { nounwind uwtable "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { uwtable "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!8, !9}
!llvm.ident = !{!10}
!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
!1 = !MDFile(filename: "propagate.cc", directory: ".")
!2 = !{}
!3 = !{!4, !7}
!4 = !MDSubprogram(name: "foo", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !5, type: !6, function: i64 (i32, i32, i64)* @_Z3fooiil, variables: !2)
!5 = !MDFile(filename: "propagate.cc", directory: ".")
!6 = !MDSubroutineType(types: !{null})
!7 = !MDSubprogram(name: "main", line: 24, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 24, file: !1, scope: !5, type: !6, function: i32 ()* @main, variables: !2)
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 1, !"Debug Info Version", i32 3}
!10 = !{!"clang version 3.5 "}
!11 = !MDLocation(line: 4, scope: !12)
!12 = distinct !MDLexicalBlock(line: 4, column: 0, file: !1, scope: !4)
!13 = !MDLocation(line: 5, scope: !14)
!14 = distinct !MDLexicalBlock(line: 4, column: 0, file: !1, scope: !12)
!15 = !MDLocation(line: 7, scope: !16)
!16 = distinct !MDLexicalBlock(line: 7, column: 0, file: !1, scope: !17)
!17 = distinct !MDLexicalBlock(line: 6, column: 0, file: !1, scope: !12)
!18 = !MDLocation(line: 8, scope: !19)
!19 = distinct !MDLexicalBlock(line: 8, column: 0, file: !1, scope: !20)
!20 = distinct !MDLexicalBlock(line: 7, column: 0, file: !1, scope: !16)
!21 = !MDLocation(line: 9, scope: !19)
!22 = !MDLocation(line: 10, scope: !23)
!23 = distinct !MDLexicalBlock(line: 10, column: 0, file: !1, scope: !20)
!24 = !MDLocation(line: 11, scope: !25)
!25 = distinct !MDLexicalBlock(line: 10, column: 0, file: !1, scope: !23)
!26 = !MDLocation(line: 12, scope: !25)
!27 = !MDLocation(line: 13, scope: !25)
!28 = !MDLocation(line: 14, scope: !29)
!29 = distinct !MDLexicalBlock(line: 14, column: 0, file: !1, scope: !30)
!30 = distinct !MDLexicalBlock(line: 13, column: 0, file: !1, scope: !23)
!31 = !MDLocation(line: 15, scope: !32)
!32 = distinct !MDLexicalBlock(line: 14, column: 0, file: !1, scope: !29)
!33 = !MDLocation(line: 16, scope: !32)
!34 = !MDLocation(line: 17, scope: !32)
!35 = !MDLocation(line: 19, scope: !20)
!36 = !MDLocation(line: 21, scope: !4)
!37 = !MDLocation(line: 22, scope: !4)
!38 = !MDLocation(line: 25, scope: !7)
!39 = !MDLocation(line: 26, scope: !7)
!40 = !MDLocation(line: 27, scope: !7)
!41 = !MDLocation(line: 28, scope: !7)
!42 = !MDLocation(line: 29, scope: !7)
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