switch-tracing.ll
2.08 KB
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; Test -sanitizer-coverage-trace-compares=1 (instrumenting a switch)
; RUN: opt < %s -sancov -sanitizer-coverage-level=1 -sanitizer-coverage-trace-compares=1 -S | FileCheck %s
; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=1 -sanitizer-coverage-trace-compares=1 -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"
target triple = "x86_64-unknown-linux-gnu"
declare void @_Z3bari(i32)
define void @foo(i32 %x) {
entry:
; CHECK: __sancov_gen_cov_switch_values = internal global [5 x i64] [i64 3, i64 32, i64 1, i64 101, i64 1001]
; CHECK: [[TMP:%[0-9]*]] = zext i32 %x to i64
; CHECK-NEXT: call void @__sanitizer_cov_trace_switch(i64 [[TMP]], i64* getelementptr inbounds ([5 x i64], [5 x i64]* @__sancov_gen_cov_switch_values, i32 0, i32 0))
switch i32 %x, label %sw.epilog [
i32 1, label %sw.bb
i32 1001, label %sw.bb.1
i32 101, label %sw.bb.2
]
sw.bb: ; preds = %entry
tail call void @_Z3bari(i32 4)
br label %sw.epilog
sw.bb.1: ; preds = %entry
tail call void @_Z3bari(i32 5)
br label %sw.epilog
sw.bb.2: ; preds = %entry
tail call void @_Z3bari(i32 6)
br label %sw.epilog
sw.epilog: ; preds = %entry, %sw.bb.2, %sw.bb.1, %sw.bb
ret void
}
define void @fooi72(i72 %x) {
entry:
switch i72 %x, label %sw.epilog [
i72 1, label %sw.bb
i72 101, label %sw.bb.1
i72 1001, label %sw.bb.2
]
sw.bb: ; preds = %entry
tail call void @_Z3bari(i32 4)
br label %sw.epilog
sw.bb.1: ; preds = %entry
tail call void @_Z3bari(i32 5)
br label %sw.epilog
sw.bb.2: ; preds = %entry
tail call void @_Z3bari(i32 6)
br label %sw.epilog
sw.epilog: ; preds = %entry, %sw.bb.2, %sw.bb.1, %sw.bb
ret void
}