derek.holloway
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78 lines
3.4 KiB
LLVM
78 lines
3.4 KiB
LLVM
; REQUIRES: x86-registered-target
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; RUN: opt < %s -passes='pseudo-probe,loop-unroll-full' -verify-pseudo-probe -S -o %t 2>&1 | FileCheck %s --check-prefix=VERIFY
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; RUN: FileCheck %s < %t
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; VERIFY: *** Pseudo Probe Verification After LoopFullUnrollPass ***
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; VERIFY: Function foo:
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; VERIFY-DAG: Probe 5 previous factor 1.00 current factor 5.00
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; VERIFY-DAG: Probe 4 previous factor 1.00 current factor 5.00
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declare void @foo2() nounwind
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define void @foo(i32 %x) {
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bb:
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 1, i32 0, i64 -1)
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%tmp = alloca [5 x ptr], align 16
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br label %bb7.preheader
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bb3.loopexit:
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%spec.select.lcssa = phi i32 [ %spec.select, %bb10 ]
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%tmp5.not = icmp eq i32 %spec.select.lcssa, 0
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br i1 %tmp5.not, label %bb24, label %bb7.preheader
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bb7.preheader:
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 3, i32 0, i64 -1)
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%tmp1.06 = phi i32 [ 5, %bb ], [ %spec.select.lcssa, %bb3.loopexit ]
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br label %bb10
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bb10:
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 4, i32 0, i64 -1)
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; CHECK: call void @foo2(), !dbg ![[#PROBE6:]]
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 4, i32 0, i64 -1)
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; CHECK: call void @foo2(), !dbg ![[#PROBE6:]]
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 4, i32 0, i64 -1)
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; CHECK: call void @foo2(), !dbg ![[#PROBE6:]]
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 4, i32 0, i64 -1)
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; CHECK: call void @foo2(), !dbg ![[#PROBE6:]]
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 4, i32 0, i64 -1)
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; CHECK: call void @foo2(), !dbg ![[#PROBE6:]]
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 2, i32 0, i64 -1)
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%indvars.iv = phi i64 [ 0, %bb7.preheader ], [ %indvars.iv.next, %bb10 ]
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%tmp1.14 = phi i32 [ %tmp1.06, %bb7.preheader ], [ %spec.select, %bb10 ]
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%tmp13 = getelementptr inbounds [5 x ptr], ptr %tmp, i64 0, i64 %indvars.iv
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%tmp14 = load ptr, ptr %tmp13, align 8
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%tmp15.not = icmp ne ptr %tmp14, null
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%tmp18 = sext i1 %tmp15.not to i32
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%spec.select = add nsw i32 %tmp1.14, %tmp18
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call void @foo2(), !dbg !12
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond.not = icmp eq i64 %indvars.iv.next, 5
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br i1 %exitcond.not, label %bb3.loopexit, label %bb10, !llvm.loop !13
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bb24:
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 6, i32 0, i64 -1)
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ret void
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}
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;; A discriminator of 455082031 which is 0x1b200037 in hexdecimal, stands for a direct call probe
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;; with an index of 6 and a scale of -1%.
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; CHECK: ![[#PROBE6]] = !DILocation(line: 2, column: 20, scope: ![[#SCOPE:]])
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; CHECK: ![[#SCOPE]] = !DILexicalBlockFile(scope: ![[#]], file: ![[#]], discriminator: 455082031)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!9, !10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2)
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!1 = !DIFile(filename: "test.c", directory: "")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, unit: !0, retainedNodes: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7}
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!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !{i32 2, !"Dwarf Version", i32 4}
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!10 = !{i32 2, !"Debug Info Version", i32 3}
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!11 = !{!"clang version 3.9.0"}
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!12 = !DILocation(line: 2, column: 20, scope: !4)
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!13 = distinct !{!13, !14}
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!14 = !{!"llvm.loop.unroll.full"}
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