153df1373e
If a section is supposed to hold elements of type T, then the corresponding CreateSecStartEnd()'s Ty parameter represents T*. Forwarding it to GlobalVariable constructor causes the resulting GlobalVariable's type to be T*, and its SSA value type to be T**, which is one indirection too many. This issue is mostly masked by pointer casts, however, the global variable still gets an incorrect alignment, which causes SystemZ to choose wrong instructions to access the section.
86 lines
3.9 KiB
LLVM
86 lines
3.9 KiB
LLVM
; Test -sanitizer-coverage-experimental-tracing
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; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc -S -enable-new-pm=0 | FileCheck %s --check-prefix=CHECK_PC
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; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -S -enable-new-pm=0 | FileCheck %s --check-prefix=CHECK_PC_GUARD
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; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -S -mtriple=x86_64-apple-macosx -enable-new-pm=0 | FileCheck %s --check-prefix=CHECK_PC_GUARD_DARWIN
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; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc -S | FileCheck %s --check-prefix=CHECK_PC
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; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -S | FileCheck %s --check-prefix=CHECK_PC_GUARD
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; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -S -mtriple=x86_64-apple-macosx | FileCheck %s --check-prefix=CHECK_PC_GUARD_DARWIN
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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 void @foo(i32* %a) sanitize_address {
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entry:
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%tobool = icmp eq i32* %a, null
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br i1 %tobool, label %if.end, label %if.then
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if.then: ; preds = %entry
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store i32 0, i32* %a, align 4
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br label %if.end
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if.end: ; preds = %entry, %if.then
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ret void
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}
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define available_externally void @external_bar(i32* %a) sanitize_address {
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entry:
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ret void
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}
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declare void @longjmp(i8*) noreturn
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; We expect three coverage points here for each BB.
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define void @cond_longjmp(i1 %cond, i8* %jmp_buf) sanitize_address {
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entry:
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br i1 %cond, label %lj, label %done
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done:
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ret void
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lj:
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call void @longjmp(i8* %jmp_buf)
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unreachable
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}
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; CHECK_PC-LABEL: define void @foo
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; CHECK_PC: call void @__sanitizer_cov_trace_pc
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; CHECK_PC: call void @__sanitizer_cov_trace_pc
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; CHECK_PC: call void @__sanitizer_cov_trace_pc
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; CHECK_PC-NOT: call void @__sanitizer_cov_trace_pc
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; CHECK_PC: ret void
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; CHECK_PC-NOT: call void @__sanitizer_cov_module_init
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; CHECK_PC-LABEL: @cond_longjmp
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; CHECK_PC: call void @__sanitizer_cov_trace_pc
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; CHECK_PC: call void @__sanitizer_cov_trace_pc
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; CHECK_PC: ret void
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; CHECK_PC: call void @__sanitizer_cov_trace_pc
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; CHECK_PC: call void @longjmp
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; CHECK_PC: unreachable
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; CHECK_PC_GUARD: section "__sancov_guards", comdat($foo), align 4
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; CHECK_PC_GUARD-LABEL: define void @foo
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; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
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; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
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; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
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; CHECK_PC_GUARD-NOT: call void @__sanitizer_cov_trace_pc
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; CHECK_PC_GUARD: ret void
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; CHECK_PC_GUARD-LABEL: @external_bar
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; CHECK_PC_GUARD-NOT: call void @__sanitizer_cov_trace_pc
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; CHECK_PC_GUARD: ret void
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; CHECK_PC_GUARD-LABEL: @cond_longjmp
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; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
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; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
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; CHECK_PC_GUARD: ret void
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; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
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; CHECK_PC_GUARD: call void @longjmp
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; CHECK_PC_GUARD: unreachable
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; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard_init(i32* @__start___sancov_guards, i32* @__stop___sancov_guards)
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; CHECK_PC_GUARD_DARWIN-LABEL: define void @foo
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; CHECK_PC_GUARD_DARWIN: call void @__sanitizer_cov_trace_pc_guard
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; CHECK_PC_GUARD_DARWIN: call void @__sanitizer_cov_trace_pc_guard
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; CHECK_PC_GUARD_DARWIN: call void @__sanitizer_cov_trace_pc_guard
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; CHECK_PC_GUARD_DARWIN-NOT: call void @__sanitizer_cov_trace_pc
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; CHECK_PC_GUARD_DARWIN: ret void
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; CHECK_PC_GUARD_DARWIN: call void @__sanitizer_cov_trace_pc_guard_init(i32* @"\01section$start$__DATA$__sancov_guards", i32* @"\01section$end$__DATA$__sancov_guards")
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