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This test is based on a customer-reported failure in an XL compiler, added here
to improve clang regression testing. The primary purpose of the test is to
ensure that the array initializations can be evaluated without the need for
runtime initialization.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D122497
Files:
clang/test/CodeGen/array-init-2.c
Index: clang/test/CodeGen/array-init-2.c
===================================================================
--- /dev/null
+++ clang/test/CodeGen/array-init-2.c
@@ -0,0 +1,38 @@
+// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
+
+typedef enum {
+ a,
+ b,
+ c,
+ d,
+ e,
+ f,
+ g,
+ h
+} E;
+
+typedef struct {
+ E c;
+ int val;
+} Entry;
+
+static const Entry entries[] = {
+ {a,},
+ {b,},
+ {c,},
+ {d,},
+ {e,},
+ {f,},
+ {g,},
+ {h,}
+};
+
+const Entry *list[] = {
+ entries,
+ entries,
+ entries
+};
+
+// CHECK: %struct.Entry = type { [[E:i[0-9]+]], i32 }
+// CHECK: @entries = internal constant [8 x %struct.Entry] [%struct.Entry
zeroinitializer, %struct.Entry { [[E]] 1, i32 0 }, %struct.Entry { [[E]] 2, i32
0 }, %struct.Entry { [[E]] 3, i32 0 }, %struct.Entry { [[E]] 4, i32 0 },
%struct.Entry { [[E]] 5, i32 0 }, %struct.Entry { [[E]] 6, i32 0 },
%struct.Entry { [[E]] 7, i32 0 }], align 4
+// CHECK: @list = global [3 x %struct.Entry*] [%struct.Entry* getelementptr
inbounds ([8 x %struct.Entry], [8 x %struct.Entry]* @entries, i32 0, i32 0),
%struct.Entry* getelementptr inbounds ([8 x %struct.Entry], [8 x
%struct.Entry]* @entries, i32 0, i32 0), %struct.Entry* getelementptr inbounds
([8 x %struct.Entry], [8 x %struct.Entry]* @entries, i32 0, i32 0)], align 8
Index: clang/test/CodeGen/array-init-2.c
===================================================================
--- /dev/null
+++ clang/test/CodeGen/array-init-2.c
@@ -0,0 +1,38 @@
+// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
+
+typedef enum {
+ a,
+ b,
+ c,
+ d,
+ e,
+ f,
+ g,
+ h
+} E;
+
+typedef struct {
+ E c;
+ int val;
+} Entry;
+
+static const Entry entries[] = {
+ {a,},
+ {b,},
+ {c,},
+ {d,},
+ {e,},
+ {f,},
+ {g,},
+ {h,}
+};
+
+const Entry *list[] = {
+ entries,
+ entries,
+ entries
+};
+
+// CHECK: %struct.Entry = type { [[E:i[0-9]+]], i32 }
+// CHECK: @entries = internal constant [8 x %struct.Entry] [%struct.Entry zeroinitializer, %struct.Entry { [[E]] 1, i32 0 }, %struct.Entry { [[E]] 2, i32 0 }, %struct.Entry { [[E]] 3, i32 0 }, %struct.Entry { [[E]] 4, i32 0 }, %struct.Entry { [[E]] 5, i32 0 }, %struct.Entry { [[E]] 6, i32 0 }, %struct.Entry { [[E]] 7, i32 0 }], align 4
+// CHECK: @list = global [3 x %struct.Entry*] [%struct.Entry* getelementptr inbounds ([8 x %struct.Entry], [8 x %struct.Entry]* @entries, i32 0, i32 0), %struct.Entry* getelementptr inbounds ([8 x %struct.Entry], [8 x %struct.Entry]* @entries, i32 0, i32 0), %struct.Entry* getelementptr inbounds ([8 x %struct.Entry], [8 x %struct.Entry]* @entries, i32 0, i32 0)], align 8
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