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TheRock/compiler/amd-llvm/llvm/test/Instrumentation/ThreadSanitizer/volatile.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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; RUN: opt < %s -passes=tsan -tsan-distinguish-volatile -S | FileCheck %s
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-S128"
define i16 @test_volatile_read2(ptr %a) sanitize_thread {
entry:
%tmp1 = load volatile i16, ptr %a, align 2
ret i16 %tmp1
}
; CHECK-LABEL: define i16 @test_volatile_read2(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_volatile_read2(ptr %a)
; CHECK-NEXT: %tmp1 = load volatile i16, ptr %a, align 2
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret i16
define i32 @test_volatile_read4(ptr %a) sanitize_thread {
entry:
%tmp1 = load volatile i32, ptr %a, align 4
ret i32 %tmp1
}
; CHECK-LABEL: define i32 @test_volatile_read4(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_volatile_read4(ptr %a)
; CHECK-NEXT: %tmp1 = load volatile i32, ptr %a, align 4
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret i32
define i64 @test_volatile_read8(ptr %a) sanitize_thread {
entry:
%tmp1 = load volatile i64, ptr %a, align 8
ret i64 %tmp1
}
; CHECK-LABEL: define i64 @test_volatile_read8(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_volatile_read8(ptr %a)
; CHECK-NEXT: %tmp1 = load volatile i64, ptr %a, align 8
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret i64
define i128 @test_volatile_read16(ptr %a) sanitize_thread {
entry:
%tmp1 = load volatile i128, ptr %a, align 16
ret i128 %tmp1
}
; CHECK-LABEL: define i128 @test_volatile_read16(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_volatile_read16(ptr %a)
; CHECK-NEXT: %tmp1 = load volatile i128, ptr %a, align 16
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret i128
define void @test_volatile_write2(ptr %a) sanitize_thread {
entry:
store volatile i16 1, ptr %a, align 2
ret void
}
; CHECK-LABEL: define void @test_volatile_write2(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_volatile_write2(ptr %a)
; CHECK-NEXT: store volatile i16 1, ptr %a, align 2
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret void
define void @test_volatile_write4(ptr %a) sanitize_thread {
entry:
store volatile i32 1, ptr %a, align 4
ret void
}
; CHECK-LABEL: define void @test_volatile_write4(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_volatile_write4(ptr %a)
; CHECK-NEXT: store volatile i32 1, ptr %a, align 4
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret void
define void @test_volatile_write8(ptr %a) sanitize_thread {
entry:
store volatile i64 1, ptr %a, align 8
ret void
}
; CHECK-LABEL: define void @test_volatile_write8(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_volatile_write8(ptr %a)
; CHECK-NEXT: store volatile i64 1, ptr %a, align 8
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret void
define void @test_volatile_write16(ptr %a) sanitize_thread {
entry:
store volatile i128 1, ptr %a, align 16
ret void
}
; CHECK-LABEL: define void @test_volatile_write16(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_volatile_write16(ptr %a)
; CHECK-NEXT: store volatile i128 1, ptr %a, align 16
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret void
; Check unaligned volatile accesses
define i32 @test_unaligned_read4(ptr %a) sanitize_thread {
entry:
%tmp1 = load volatile i32, ptr %a, align 2
ret i32 %tmp1
}
; CHECK-LABEL: define i32 @test_unaligned_read4(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_unaligned_volatile_read4(ptr %a)
; CHECK-NEXT: %tmp1 = load volatile i32, ptr %a, align 2
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret i32
define void @test_unaligned_write4(ptr %a) sanitize_thread {
entry:
store volatile i32 1, ptr %a, align 1
ret void
}
; CHECK-LABEL: define void @test_unaligned_write4(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_unaligned_volatile_write4(ptr %a)
; CHECK-NEXT: store volatile i32 1, ptr %a, align 1
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret void
; Check that regular aligned accesses are unaffected
define i32 @test_read4(ptr %a) sanitize_thread {
entry:
%tmp1 = load i32, ptr %a, align 4
ret i32 %tmp1
}
; CHECK-LABEL: define i32 @test_read4(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_read4(ptr %a)
; CHECK-NEXT: %tmp1 = load i32, ptr %a, align 4
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret i32
define void @test_write4(ptr %a) sanitize_thread {
entry:
store i32 1, ptr %a, align 4
ret void
}
; CHECK-LABEL: define void @test_write4(ptr %a)
; CHECK: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @__tsan_write4(ptr %a)
; CHECK-NEXT: store i32 1, ptr %a, align 4
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK: ret void
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