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jvoungjvoung
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Add a few more cases to auto-var-init-max-size test (init, noinit, later)
We check that the init doesn't have auto-init of pattern or 0 and we check that noinit and init_later do.
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‎clang/test/CodeGenCXX/auto-var-init-max-size.cpp

Lines changed: 28 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,9 @@ struct Foo {
1515

1616
int foo(unsigned n) {
1717
bool var_size_1;
18-
long var_size_8;
18+
long var_size_8_init = 123;
19+
long var_size_8_noinit;
20+
long var_size_8_init_later;
1921
void *var_size_8p;
2022
int var_size_1024[256];
2123
Foo var_size_1028;
@@ -24,29 +26,39 @@ int foo(unsigned n) {
2426
int var_vla[n];
2527
// builtin, non-constant size
2628
var_size_8p = __builtin_alloca(sizeof(unsigned long long) * n);
27-
// There are 8 variables: var_size_1, var_size_8, var_size_8p, var_size_1024,
29+
var_size_8_init_later = 456;
30+
// There are 10 variables: var_size_1, var_size_8_init, var_size_8_noinit,
31+
// var_size_8_init_later, var_size_8p, var_size_1024,
2832
// var_size_1028, var_size_4096, var_vla, and a builtin anonymous var ("%5").
33+
// - Doesn't need auto-init: var_size_8_init
2934
// - COMMON (auto-init regardless of the max size): "var_vla", and "%5"
3035
// - Max size 1: "var_size_1"
31-
// - Max size 1024: "var_size_1", "var_size_8", "var_size_8p", "var_size_1024"
32-
// - Max size 4096: "var_size_1", "var_size_8", "var_size_8p", "var_size_1024", "var_size_1028", "var_size_4096"
36+
// - Max size 1024: "var_size_1", "var_size_8_noinit", "var_size_8_init_later", "var_size_8p", "var_size_1024"
37+
// - Max size 4096: "var_size_1", "var_size_8_noinit", "var_size_8_init_later", "var_size_8p", "var_size_1024",
38+
// "var_size_1028", "var_size_4096"
3339
//
3440
// PATTERN-MAX-1: store i8 -86, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
35-
// PATTERN-MAX-1-NOT: store i64 -6148914691236517206, ptr %var_size_8, align 8, !annotation [[AUTO_INIT:!.+]]
41+
// PATTERN-MAX-1-NEXT: store i64 123, ptr %var_size_8_init, align 8
42+
// PATTERN-MAX-1-NOT: store i64 -6148914691236517206, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
43+
// PATTERN-MAX-1-NOT: store i64 -6148914691236517206, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
3644
// PATTERN-MAX-1-NOT: store ptr inttoptr (i64 -6148914691236517206 to ptr), ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
3745
// PATTERN-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 -86, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
3846
// PATTERN-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 -86, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
3947
// PATTERN-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 -86, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
4048

4149
// PATTERN-MAX-1024: store i8 -86, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
42-
// PATTERN-MAX-1024: store i64 -6148914691236517206, ptr %var_size_8, align 8, !annotation [[AUTO_INIT:!.+]]
50+
// PATTERN-MAX-1024-NEXT: store i64 123, ptr %var_size_8_init, align 8
51+
// PATTERN-MAX-1024: store i64 -6148914691236517206, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
52+
// PATTERN-MAX-1024: store i64 -6148914691236517206, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
4353
// PATTERN-MAX-1024: store ptr inttoptr (i64 -6148914691236517206 to ptr), ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
4454
// PATTERN-MAX-1024: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 -86, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
4555
// PATTERN-MAX-1024-NOT: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 -86, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
4656
// PATTERN-MAX-1024-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 -86, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
4757

4858
// PATTERN-MAX-4096: store i8 -86, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
49-
// PATTERN-MAX-4096: store i64 -6148914691236517206, ptr %var_size_8, align 8, !annotation [[AUTO_INIT:!.+]]
59+
// PATTERN-MAX-4096-NEXT: store i64 123, ptr %var_size_8_init, align 8
60+
// PATTERN-MAX-4096: store i64 -6148914691236517206, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
61+
// PATTERN-MAX-4096: store i64 -6148914691236517206, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
5062
// PATTERN-MAX-4096: store ptr inttoptr (i64 -6148914691236517206 to ptr), ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
5163
// PATTERN-MAX-4096: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 -86, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
5264
// PATTERN-MAX-4096: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 -86, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
@@ -56,21 +68,27 @@ int foo(unsigned n) {
5668
// PATTERN-COMMON: call void @llvm.memset.p0.i64(ptr align 16 %5, i8 -86, i64 %mul, i1 false), !annotation [[AUTO_INIT:!.+]]
5769

5870
// ZERO-MAX-1: store i8 0, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
59-
// ZERO-MAX-1-NOT: store i64 0, ptr %var_size_8, align 8, !annotation [[AUTO_INIT:!.+]]
71+
// ZERO-MAX-1-NEXT: store i64 123, ptr %var_size_8_init, align 8
72+
// ZERO-MAX-1-NOT: store i64 0, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
73+
// ZERO-MAX-1-NOT: store i64 0, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
6074
// ZERO-MAX-1-NOT: store ptr null, ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
6175
// ZERO-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 0, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
6276
// ZERO-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 0, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
6377
// ZERO-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 0, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
6478

6579
// ZERO-MAX-1024: store i8 0, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
66-
// ZERO-MAX-1024: store i64 0, ptr %var_size_8, align 8, !annotation [[AUTO_INIT:!.+]]
80+
// ZERO-MAX-1024-NEXT: store i64 123, ptr %var_size_8_init, align 8
81+
// ZERO-MAX-1024: store i64 0, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
82+
// ZERO-MAX-1024: store i64 0, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
6783
// ZERO-MAX-1024: store ptr null, ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
6884
// ZERO-MAX-1024: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 0, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
6985
// ZERO-MAX-1024-NOT: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 0, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
7086
// ZERO-MAX-1024-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 0, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
7187

7288
// ZERO-MAX-4096: store i8 0, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
73-
// ZERO-MAX-4096: store i64 0, ptr %var_size_8, align 8, !annotation [[AUTO_INIT:!.+]]
89+
// ZERO-MAX-4096-NEXT: store i64 123, ptr %var_size_8_init, align 8
90+
// ZERO-MAX-4096: store i64 0, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
91+
// ZERO-MAX-4096: store i64 0, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
7492
// ZERO-MAX-4096: store ptr null, ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
7593
// ZERO-MAX-4096: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 0, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
7694
// ZERO-MAX-4096: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 0, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]

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