derek.holloway
7502bf64a4
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48 lines
1.9 KiB
LLVM
48 lines
1.9 KiB
LLVM
;; Test that we don't instrument loads to PGO counters or other
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;; compiler inserted variables.
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;
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; RUN: opt < %s -passes='function(memprof),module(memprof-module)' -S | FileCheck --check-prefixes=CHECK %s
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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"
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target triple = "x86_64-unknown-linux-gnu"
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$__profc__Z3foov = comdat nodeduplicate
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@__profc__Z3foov = private global [1 x i64] zeroinitializer, section "__llvm_prf_cnts", comdat, align 8
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@__llvm_gcov_ctr = internal global [1 x i64] zeroinitializer
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define void @_Z3foov(ptr %a) {
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entry:
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;; Load that should get instrumentation.
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%tmp1 = load i32, ptr %a, align 4
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;; PGO counter update
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%pgocount = load i64, ptr @__profc__Z3foov, align 8
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%0 = add i64 %pgocount, 1
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store i64 %0, ptr @__profc__Z3foov, align 8
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;; Gcov counter update
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%gcovcount = load i64, ptr @__llvm_gcov_ctr, align 8
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%1 = add i64 %gcovcount, 1
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store i64 %1, ptr @__llvm_gcov_ctr, align 8
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ret void
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}
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;; We should only add memory profile instrumentation for the first load.
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; CHECK: define void @_Z3foov
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %0 = load i64, ptr @__memprof_shadow_memory_dynamic_address, align 8
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; CHECK-NEXT: %1 = ptrtoint ptr %a to i64
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; CHECK-NEXT: %2 = and i64 %1, -64
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; CHECK-NEXT: %3 = lshr i64 %2, 3
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; CHECK-NEXT: %4 = add i64 %3, %0
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; CHECK-NEXT: %5 = inttoptr i64 %4 to ptr
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; CHECK-NEXT: %6 = load i64, ptr %5, align 8
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; CHECK-NEXT: %7 = add i64 %6, 1
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; CHECK-NEXT: store i64 %7, ptr %5, align 8
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; CHECK-NEXT: %tmp1 = load i32, ptr %a, align 4
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; CHECK-NEXT: %pgocount = load i64, ptr @__profc__Z3foov
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; CHECK-NEXT: %8 = add i64 %pgocount, 1
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; CHECK-NEXT: store i64 %8, ptr @__profc__Z3foov
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; CHECK-NEXT: %gcovcount = load i64, ptr @__llvm_gcov_ctr
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; CHECK-NEXT: %9 = add i64 %gcovcount, 1
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; CHECK-NEXT: store i64 %9, ptr @__llvm_gcov_ctr
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; CHECK-NEXT: ret void
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