derek.holloway
7502bf64a4
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50 lines
2.3 KiB
LLVM
50 lines
2.3 KiB
LLVM
; Test optional annotation of stack addresses.
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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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; RUN: opt < %s -passes='function(memprof),module(memprof-module)' -memprof-instrument-stack -S | FileCheck --check-prefixes=CHECK,STACK %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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define i32 @test_stack_load() {
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entry:
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%x = alloca i32, align 4
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%tmp1 = load i32, ptr %x, align 4
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ret i32 %tmp1
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}
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; CHECK-LABEL: @test_stack_load
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; CHECK: %[[SHADOW_OFFSET:[^ ]*]] = load i64, ptr @__memprof_shadow_memory_dynamic_address
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; CHECK-NEXT: %x = alloca i32
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; STACK-NEXT: %[[LOAD_ADDR:[^ ]*]] = ptrtoint ptr %x to i64
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; STACK-NEXT: %[[MASKED_ADDR:[^ ]*]] = and i64 %[[LOAD_ADDR]], -64
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; STACK-NEXT: %[[SHIFTED_ADDR:[^ ]*]] = lshr i64 %[[MASKED_ADDR]], 3
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; STACK-NEXT: add i64 %[[SHIFTED_ADDR]], %[[SHADOW_OFFSET]]
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; STACK-NEXT: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr
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; STACK-NEXT: %[[LOAD_SHADOW:[^ ]*]] = load i64, ptr %[[LOAD_SHADOW_PTR]]
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; STACK-NEXT: %[[NEW_SHADOW:[^ ]*]] = add i64 %[[LOAD_SHADOW]], 1
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; STACK-NEXT: store i64 %[[NEW_SHADOW]], ptr %[[LOAD_SHADOW_PTR]]
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; The actual load.
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; CHECK-NEXT: %tmp1 = load i32, ptr %x
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; CHECK-NEXT: ret i32 %tmp1
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define void @test_stack_store() {
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entry:
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%x = alloca i32, align 4
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store i32 1, ptr %x, align 4
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ret void
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}
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; CHECK-LABEL: @test_stack_store
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; CHECK: %[[SHADOW_OFFSET:[^ ]*]] = load i64, ptr @__memprof_shadow_memory_dynamic_address
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; CHECK-NEXT: %x = alloca i32
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; STACK-NEXT: %[[STORE_ADDR:[^ ]*]] = ptrtoint ptr %x to i64
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; STACK-NEXT: %[[MASKED_ADDR:[^ ]*]] = and i64 %[[STORE_ADDR]], -64
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; STACK-NEXT: %[[SHIFTED_ADDR:[^ ]*]] = lshr i64 %[[MASKED_ADDR]], 3
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; STACK-NEXT: add i64 %[[SHIFTED_ADDR]], %[[SHADOW_OFFSET]]
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; STACK-NEXT: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr
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; STACK-NEXT: %[[STORE_SHADOW:[^ ]*]] = load i64, ptr %[[STORE_SHADOW_PTR]]
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; STACK-NEXT: %[[NEW_SHADOW:[^ ]*]] = add i64 %[[STORE_SHADOW]], 1
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; STACK-NEXT: store i64 %[[NEW_SHADOW]], ptr %[[STORE_SHADOW_PTR]]
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; The actual store.
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; CHECK-NEXT: store i32 1, ptr %x
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; CHECK-NEXT: ret void
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