mirror of
https://github.com/c64scene-ar/llvm-6502.git
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83902832de
This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219010 91177308-0d34-0410-b5e6-96231b3b80d8
117 lines
5.1 KiB
LLVM
117 lines
5.1 KiB
LLVM
; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/calls.prof | opt -analyze -branch-prob | FileCheck %s
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; Original C++ test case
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;
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; #include <stdio.h>
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;
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; int sum(int x, int y) {
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; return x + y;
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; }
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;
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; int main() {
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; int s, i = 0;
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; while (i++ < 20000 * 20000)
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; if (i != 100) s = sum(i, s); else s = 30;
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; printf("sum is %d\n", s);
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; return 0;
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; }
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@.str = private unnamed_addr constant [11 x i8] c"sum is %d\0A\00", align 1
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; Function Attrs: nounwind uwtable
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define i32 @_Z3sumii(i32 %x, i32 %y) {
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entry:
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%x.addr = alloca i32, align 4
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%y.addr = alloca i32, align 4
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store i32 %x, i32* %x.addr, align 4
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store i32 %y, i32* %y.addr, align 4
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%0 = load i32* %x.addr, align 4, !dbg !11
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%1 = load i32* %y.addr, align 4, !dbg !11
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%add = add nsw i32 %0, %1, !dbg !11
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ret i32 %add, !dbg !11
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}
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; Function Attrs: uwtable
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define i32 @main() {
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entry:
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%retval = alloca i32, align 4
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%s = alloca i32, align 4
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%i = alloca i32, align 4
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store i32 0, i32* %retval
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store i32 0, i32* %i, align 4, !dbg !12
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br label %while.cond, !dbg !13
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while.cond: ; preds = %if.end, %entry
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%0 = load i32* %i, align 4, !dbg !14
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%inc = add nsw i32 %0, 1, !dbg !14
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store i32 %inc, i32* %i, align 4, !dbg !14
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%cmp = icmp slt i32 %0, 400000000, !dbg !14
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br i1 %cmp, label %while.body, label %while.end, !dbg !14
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; CHECK: edge while.cond -> while.body probability is 5391 / 5392 = 99.9815% [HOT edge]
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; CHECK: edge while.cond -> while.end probability is 1 / 5392 = 0.018546%
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while.body: ; preds = %while.cond
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%1 = load i32* %i, align 4, !dbg !16
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%cmp1 = icmp ne i32 %1, 100, !dbg !16
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br i1 %cmp1, label %if.then, label %if.else, !dbg !16
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; Without discriminator information, the profiler used to think that
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; both branches out of while.body had the same weight. In reality,
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; the edge while.body->if.then is taken most of the time.
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;
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; CHECK: edge while.body -> if.then probability is 5752 / 5753 = 99.9826% [HOT edge]
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; CHECK: edge while.body -> if.else probability is 1 / 5753 = 0.0173822%
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if.then: ; preds = %while.body
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%2 = load i32* %i, align 4, !dbg !18
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%3 = load i32* %s, align 4, !dbg !18
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%call = call i32 @_Z3sumii(i32 %2, i32 %3), !dbg !18
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store i32 %call, i32* %s, align 4, !dbg !18
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br label %if.end, !dbg !18
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if.else: ; preds = %while.body
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store i32 30, i32* %s, align 4, !dbg !20
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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br label %while.cond, !dbg !22
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while.end: ; preds = %while.cond
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%4 = load i32* %s, align 4, !dbg !24
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%call2 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.str, i32 0, i32 0), i32 %4), !dbg !24
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ret i32 0, !dbg !25
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}
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declare i32 @printf(i8*, ...) #2
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9}
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!llvm.ident = !{!10}
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!0 = metadata !{metadata !"0x11\004\00clang version 3.5 \000\00\000\00\000", metadata !1, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [./calls.cc] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"calls.cc", metadata !"."}
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!2 = metadata !{}
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!3 = metadata !{metadata !4, metadata !7}
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!4 = metadata !{metadata !"0x2e\00sum\00sum\00\003\000\001\000\006\00256\000\003", metadata !1, metadata !5, metadata !6, null, i32 (i32, i32)* @_Z3sumii, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 3] [def] [sum]
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!5 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [./calls.cc]
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!6 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !2, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!7 = metadata !{metadata !"0x2e\00main\00main\00\007\000\001\000\006\00256\000\007", metadata !1, metadata !5, metadata !6, null, i32 ()* @main, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 7] [def] [main]
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!8 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
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!9 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
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!10 = metadata !{metadata !"clang version 3.5 "}
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!11 = metadata !{i32 4, i32 0, metadata !4, null}
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!12 = metadata !{i32 8, i32 0, metadata !7, null}
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!13 = metadata !{i32 9, i32 0, metadata !7, null}
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!14 = metadata !{i32 9, i32 0, metadata !15, null}
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!15 = metadata !{metadata !"0xb\001", metadata !1, metadata !7} ; [ DW_TAG_lexical_block ] [./calls.cc]
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!16 = metadata !{i32 10, i32 0, metadata !17, null}
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!17 = metadata !{metadata !"0xb\0010\000\000", metadata !1, metadata !7} ; [ DW_TAG_lexical_block ] [./calls.cc]
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!18 = metadata !{i32 10, i32 0, metadata !19, null}
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!19 = metadata !{metadata !"0xb\001", metadata !1, metadata !17} ; [ DW_TAG_lexical_block ] [./calls.cc]
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!20 = metadata !{i32 10, i32 0, metadata !21, null}
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!21 = metadata !{metadata !"0xb\002", metadata !1, metadata !17} ; [ DW_TAG_lexical_block ] [./calls.cc]
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!22 = metadata !{i32 10, i32 0, metadata !23, null}
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!23 = metadata !{metadata !"0xb\003", metadata !1, metadata !17} ; [ DW_TAG_lexical_block ] [./calls.cc]
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!24 = metadata !{i32 11, i32 0, metadata !7, null}
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!25 = metadata !{i32 12, i32 0, metadata !7, null}
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