1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
// RUN: %clang_cc1 -S -emit-llvm -o - -O2 -disable-llvm-passes %s | FileCheck %s --implicit-check-not="call void @llvm.lifetime" --check-prefixes=CHECK,O2
// RUN: %clang_cc1 -S -emit-llvm -o - -O2 -disable-lifetime-markers %s | FileCheck %s --implicit-check-not="call void @llvm.lifetime" --check-prefixes=CHECK
// RUN: %clang_cc1 -S -emit-llvm -o - -O0 %s | FileCheck %s --implicit-check-not="call void @llvm.lifetime" --check-prefixes=CHECK
extern int bar(char *A, int n);
// CHECK-LABEL: @no_switch_bypass
extern "C" void no_switch_bypass(int n) {
// O2: call void @llvm.lifetime.start.p0(i64 4,
switch (n += 1; int b=n) {
case 1: {
// O2: call void @llvm.lifetime.start.p0(i64 1,
// O2: call void @llvm.lifetime.end.p0(i64 1,
char x;
bar(&x, 1);
break;
}
case 2:
n = n;
// O2: call void @llvm.lifetime.start.p0(i64 5,
// O2: call void @llvm.lifetime.end.p0(i64 5,
char y[5];
bar(y, 5);
break;
}
// O2: call void @llvm.lifetime.end.p0(i64 4,
}
// CHECK-LABEL: @switch_bypass
extern "C" void switch_bypass(int n) {
// O2: call void @llvm.lifetime.start.p0(i64 4,
// O2: call void @llvm.lifetime.end.p0(i64 4,
switch (n += 1; int b=n) {
case 1:
n = n;
char x;
bar(&x, 1);
break;
case 2:
bar(&x, 1);
break;
}
}
|
