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Diffstat (limited to 'llvm/test/Transforms/SampleProfile/discriminator.ll')
-rw-r--r-- | llvm/test/Transforms/SampleProfile/discriminator.ll | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/llvm/test/Transforms/SampleProfile/discriminator.ll b/llvm/test/Transforms/SampleProfile/discriminator.ll deleted file mode 100644 index 7b3b270d9f1..00000000000 --- a/llvm/test/Transforms/SampleProfile/discriminator.ll +++ /dev/null @@ -1,90 +0,0 @@ -; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/discriminator.prof | opt -analyze -branch-prob | FileCheck %s -; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/discriminator.prof | opt -analyze -branch-prob | FileCheck %s - -; Original code -; -; 1 int foo(int i) { -; 2 int x = 0; -; 3 while (i < 100) { -; 4 if (i < 5) x--; -; 5 i++; -; 6 } -; 7 return x; -; 8 } -; -; In this test, if the loop is executed 100 times, the decrement operation -; at line 4 should only execute 5 times. This is reflected in the profile -; data for line offset 3. In Inputs/discriminator.prof, we have: -; -; 3: 100 -; 3.1: 5 -; -; This means that the predicate 'i < 5' (line 3) is executed 100 times, -; but the then branch (line 3.1) is only executed 5 times. - -define i32 @foo(i32 %i) #0 !dbg !4 { -; CHECK: Printing analysis 'Branch Probability Analysis' for function 'foo': -entry: - %i.addr = alloca i32, align 4 - %x = alloca i32, align 4 - store i32 %i, i32* %i.addr, align 4 - store i32 0, i32* %x, align 4, !dbg !10 - br label %while.cond, !dbg !11 - -while.cond: ; preds = %if.end, %entry - %0 = load i32, i32* %i.addr, align 4, !dbg !12 - %cmp = icmp slt i32 %0, 100, !dbg !12 - br i1 %cmp, label %while.body, label %while.end, !dbg !12 -; CHECK: edge while.cond -> while.body probability is 0x7d83ba68 / 0x80000000 = 98.06% [HOT edge] -; CHECK: edge while.cond -> while.end probability is 0x027c4598 / 0x80000000 = 1.94% - -while.body: ; preds = %while.cond - %1 = load i32, i32* %i.addr, align 4, !dbg !14 - %cmp1 = icmp slt i32 %1, 50, !dbg !14 - br i1 %cmp1, label %if.then, label %if.end, !dbg !14 -; CHECK: edge while.body -> if.then probability is 0x07878788 / 0x80000000 = 5.88% -; CHECK: edge while.body -> if.end probability is 0x78787878 / 0x80000000 = 94.12% [HOT edge] - -if.then: ; preds = %while.body - %2 = load i32, i32* %x, align 4, !dbg !17 - %dec = add nsw i32 %2, -1, !dbg !17 - store i32 %dec, i32* %x, align 4, !dbg !17 - br label %if.end, !dbg !17 - -if.end: ; preds = %if.then, %while.body - %3 = load i32, i32* %i.addr, align 4, !dbg !19 - %inc = add nsw i32 %3, 1, !dbg !19 - store i32 %inc, i32* %i.addr, align 4, !dbg !19 - br label %while.cond, !dbg !20 - -while.end: ; preds = %while.cond - %4 = load i32, i32* %x, align 4, !dbg !21 - ret i32 %4, !dbg !21 -} - - -!llvm.dbg.cu = !{!0} -!llvm.module.flags = !{!7, !8} -!llvm.ident = !{!9} - -!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: NoDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) -!1 = !DIFile(filename: "discriminator.c", directory: ".") -!2 = !{} -!4 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2) -!5 = !DIFile(filename: "discriminator.c", directory: ".") -!6 = !DISubroutineType(types: !2) -!7 = !{i32 2, !"Dwarf Version", i32 4} -!8 = !{i32 1, !"Debug Info Version", i32 3} -!9 = !{!"clang version 3.5 "} -!10 = !DILocation(line: 2, scope: !4) -!11 = !DILocation(line: 3, scope: !4) -!12 = !DILocation(line: 3, scope: !13) -!13 = !DILexicalBlockFile(discriminator: 2, file: !1, scope: !4) -!14 = !DILocation(line: 4, scope: !15) -!15 = distinct !DILexicalBlock(line: 4, column: 0, file: !1, scope: !16) -!16 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !4) -!17 = !DILocation(line: 4, scope: !18) -!18 = !DILexicalBlockFile(discriminator: 2, file: !1, scope: !15) -!19 = !DILocation(line: 5, scope: !16) -!20 = !DILocation(line: 6, scope: !16) -!21 = !DILocation(line: 7, scope: !4) |