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8b40a09bf5
`EmitCheckValue` is called inside `EmitCheck`:
b122956390/clang/lib/CodeGen/CGExpr.cpp (L3739)
The outside calls are redundant because
`EmitCheckValue(EmitCheckValue(V))` always returns `EmitCheckValue(V)`.
Required by https://github.com/llvm/llvm-project/pull/135135.
59 lines
5.0 KiB
C++
59 lines
5.0 KiB
C++
// RUN: %clang_cc1 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 -fsanitize=alignment -fno-sanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-NORECOVER,CHECK-SANITIZE-UNREACHABLE
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// RUN: %clang_cc1 -fsanitize=alignment -fsanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-RECOVER
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// RUN: %clang_cc1 -fsanitize=alignment -fsanitize-trap=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-TRAP,CHECK-SANITIZE-UNREACHABLE
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// CHECK-SANITIZE-ANYRECOVER: @[[CHAR:.*]] = {{.*}} c"'B *'\00" }
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// CHECK-SANITIZE-ANYRECOVER: @[[LINE_100_ALIGNMENT_ASSUMPTION:.*]] = {{.*}}, i32 100, i32 35 }, {{.*}} @[[CHAR]] }
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struct A { int n; };
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struct B { int n; };
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struct C : A, B {};
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void *f(C *c) {
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// CHECK: define {{.*}} ptr @{{.*}}(ptr noundef %[[C:.*]]) {{.*}} {
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// CHECK-NEXT: [[ENTRY:.*]]:
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// CHECK-NEXT: %[[C_ADDR:.*]] = alloca ptr
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// CHECK-NEXT: store ptr %[[C]], ptr %[[C_ADDR]]
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// CHECK-NEXT: %[[C_RELOAD:.*]] = load ptr, ptr %[[C_ADDR]]
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// CHECK-NEXT: %[[IS_NULL:.*]] = icmp eq ptr %[[C_RELOAD]], null
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// CHECK-NEXT: br i1 %[[IS_NULL]], label %[[CAST_END:[^,]+]], label %[[CAST_NOT_NULL:[^,]+]]
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// CHECK: [[CAST_NOT_NULL]]:
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// CHECK-NOSANITIZE-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[C_RELOAD]], i64 4
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// CHECK-NOSANITIZE-NEXT: br label %[[CAST_END]]
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// CHECK-SANITIZE-NEXT: %[[PTRTOINT:.*]] = ptrtoint ptr %[[C_RELOAD]] to i64, !nosanitize
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// CHECK-SANITIZE-NEXT: %[[MASKEDPTR:.*]] = and i64 %[[PTRTOINT]], 3, !nosanitize
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// CHECK-SANITIZE-NEXT: %[[MASKCOND:.*]] = icmp eq i64 %[[MASKEDPTR]], 0, !nosanitize
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// CHECK-SANITIZE-NEXT: br i1 %[[MASKCOND]], label %[[CONT:[^,]+]], label %[[HANDLER_TYPE_MISMATCH:[^,]+]]
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// CHECK-SANITIZE: [[HANDLER_TYPE_MISMATCH]]:
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// CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_type_mismatch_v1_abort(
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// CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_type_mismatch_v1(
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// CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(
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// CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
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// CHECK-SANITIZE: [[CONT]]:
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// CHECK-SANITIZE-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[C_RELOAD]], i64 4
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// CHECK-SANITIZE-NEXT: br label %[[CAST_END]]
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// CHECK: [[CAST_END]]:
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// CHECK-NOSANITIZE-NEXT: %[[CAST_RESULT:.*]] = phi ptr [ %[[ADD_PTR]], %[[CAST_NOT_NULL]] ], [ null, %[[ENTRY]] ]
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// CHECK-NOSANITIZE-NEXT: call void @llvm.assume(i1 true) [ "align"(ptr %[[CAST_RESULT]], i64 8) ]
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// CHECK-NOSANITIZE-NEXT: ret ptr %[[CAST_RESULT]]
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// CHECK-NOSANITIZE-NEXT: }
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// CHECK-SANITIZE-NEXT: %[[CAST_RESULT:.*]] = phi ptr [ %[[ADD_PTR]], %[[CONT]] ], [ null, %[[ENTRY]] ]
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// CHECK-SANITIZE-NEXT: %[[PTRINT:.*]] = ptrtoint ptr %[[CAST_RESULT]] to i64
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// CHECK-SANITIZE-NEXT: %[[MASKEDPTR:.*]] = and i64 %[[PTRINT]], 7
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// CHECK-SANITIZE-NEXT: %[[MASKCOND:.*]] = icmp eq i64 %[[MASKEDPTR]], 0
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// CHECK-SANITIZE-NEXT: br i1 %[[MASKCOND]], label %[[CONT1:.*]], label %[[HANDLER_ALIGNMENT_ASSUMPTION:[^,]+]],{{.*}} !nosanitize
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// CHECK-SANITIZE: [[HANDLER_ALIGNMENT_ASSUMPTION]]:
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// CHECK-SANITIZE-ANYRECOVER-NEXT: %[[PTRINT_DUP:.*]] = ptrtoint ptr %[[CAST_RESULT]] to i64, !nosanitize
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// CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_alignment_assumption_abort(ptr @[[LINE_100_ALIGNMENT_ASSUMPTION]], i64 %[[PTRINT_DUP]], i64 8, i64 0){{.*}}, !nosanitize
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// CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_alignment_assumption(ptr @[[LINE_100_ALIGNMENT_ASSUMPTION]], i64 %[[PTRINT_DUP]], i64 8, i64 0){{.*}}, !nosanitize
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// CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 23){{.*}}, !nosanitize
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// CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
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// CHECK-SANITIZE: [[CONT1]]:
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// CHECK-SANITIZE-NEXT: call void @llvm.assume(i1 true) [ "align"(ptr %[[CAST_RESULT]], i64 8) ]
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// CHECK-SANITIZE-NEXT: ret ptr %[[CAST_RESULT]]
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// CHECK-SANITIZE-NEXT: }
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#line 100
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return __builtin_assume_aligned((B*)c, 8);
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}
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