1 files changed, 54 insertions, 0 deletions
diff --git a/test/CodeGen/debug-info-static-const-fp.c b/test/CodeGen/debug-info-static-const-fp.c
new file mode 100644
index 0000000000000..4dfe057f2b6e2
--- /dev/null
+++ b/test/CodeGen/debug-info-static-const-fp.c
@@ -0,0 +1,54 @@
+// RUN: %clang_cc1 -emit-llvm -O0 -debug-info-kind=limited %s -o - | \
+// RUN:   FileCheck --check-prefixes CHECK %s
+
+// RUN: %clang_cc1 -triple hexagon-unknown--elf -emit-llvm -O0 -debug-info-kind=limited %s -o - | \
+// RUN:   FileCheck --check-prefixes CHECK,CHECK-LDsm %s
+
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -debug-info-kind=limited %s -o - | \
+// RUN:   FileCheck --check-prefixes CHECK,CHECK-LDlg %s
+
+// Per PR26619, check that for referenced static const of floating-point type,
+// we emit its constant value in debug info.
+//
+// NOTE that __fp16 is assumed to be 16 bits, float is assumed to be
+// 32 bits, and double is assumed to be 64 bits.  Size of long double
+// is not known (for example, it is 64 bits for hexagon-unknown--elf,
+// but 128 bits for x86_64-unknown-linux-gnu).  Therefore, we specify
+// target triples where it has a known size, and check accordingly:
+// for the absence of a constant (CHECK-LDlg) when the size exceeds 64
+// bits, and for the presence of a constant (CHECK-LDsm) but not its
+// value when the size does not exceed 64 bits.
+//
+// NOTE that PR26619 is not yet fixed for types greater than 64 bits.
+
+static const __fp16 hVal = 29/13.0f;            //    2.2307692307692307692     (2.23046875)
+
+static const float fVal = -147/17.0f;           //   -8.6470588235294117647     (-8.64705849)
+
+static const double dVal = 19637/7.0;           // 2805.2857142857142857        (2805.2857142857142)
+
+static const long double ldVal = 3/1234567.0L;  //    2.4300017739012949479e-06 (<depends on size of long double>)
+
+int main() {
+  return hVal + fVal + dVal + ldVal;
+}
+
+// CHECK: !DIGlobalVariableExpression(var: [[HVAL:.*]], expr: [[HEXPR:.*]])
+// CHECK: [[HVAL]] = distinct !DIGlobalVariable(name: "hVal",
+// CHECK-SAME:                                  isLocal: true, isDefinition: true
+// CHECK: [[HEXPR]] = !DIExpression(DW_OP_constu, 16502, DW_OP_stack_value)
+
+// CHECK: !DIGlobalVariableExpression(var: [[FVAL:.*]], expr: [[FEXPR:.*]])
+// CHECK: [[FVAL]] = distinct !DIGlobalVariable(name: "fVal",
+// CHECK-SAME:                                  isLocal: true, isDefinition: true
+// CHECK: [[FEXPR]] = !DIExpression(DW_OP_constu, 3238681178, DW_OP_stack_value)
+
+// CHECK: !DIGlobalVariableExpression(var: [[DVAL:.*]], expr: [[DEXPR:.*]])
+// CHECK: [[DVAL]] = distinct !DIGlobalVariable(name: "dVal",
+// CHECK-SAME:                                  isLocal: true, isDefinition: true
+// CHECK: [[DEXPR]] = !DIExpression(DW_OP_constu, 4658387303597904457, DW_OP_stack_value)
+
+// CHECK-LDlg-DAG: [[LDVAL:.*]] = distinct !DIGlobalVariable(name: "ldVal", {{.*}}, isLocal: true, isDefinition: true)
+// CHECK-LDlg-DAG: !DIGlobalVariableExpression(var: [[LDVAL]])
+// CHECK-LDsm-DAG: [[LDVAL:.*]] = distinct !DIGlobalVariable(name: "ldVal", {{.*}}, isLocal: true, isDefinition: true)
+// CHECK-LDsm-DAG: !DIGlobalVariableExpression(var: [[LDVAL]], expr: