gdb/fortran: Allow for using Flang in Fortran testing

In lib/fortran.exp, in the helper function fortran_int4, there is
currently no support for the LLVM Fortran compiler, Flang.  As a
result we return the default pattern 'unknown' to match against all
4-byte integer types, which causes many tests to fail.

The same is true for all of the other helper functions related to
finding a suitable type pattern.

This commit adds support for Flang.  There should be no change when
testing with gfortran.

gdb/testsuite/ChangeLog:

	* lib/fortran.exp (fortran_int4): Handle clang.
	(fortran_int8): Likewise.
	(fortran_real4): Likewise.
	(fortran_real8): Likewise.
	(fortran_complex4): Likewise.
	(fortran_logical4): Likewise.
	(fortran_character1): Likewise.

Change-Id: Ife0d9828f78361fbd992bf21af746042b017dafc

2 files changed, 24 insertions, 7 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index cd496e7..eb43880 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,13 @@
+2020-02-04  Alok Kumar Sharma  <alokkumar.sharma@amd.com>
+
+	* lib/fortran.exp (fortran_int4): Handle clang.
+	(fortran_int8): Likewise.
+	(fortran_real4): Likewise.
+	(fortran_real8): Likewise.
+	(fortran_complex4): Likewise.
+	(fortran_logical4): Likewise.
+	(fortran_character1): Likewise.
+
 2020-02-04  Tom de Vries  <tdevries@suse.de>
 
 	* README (Race detection): Add note.
diff --git a/gdb/testsuite/lib/fortran.exp b/gdb/testsuite/lib/fortran.exp
index 0c2627d..54f3293 100644
--- a/gdb/testsuite/lib/fortran.exp
+++ b/gdb/testsuite/lib/fortran.exp
@@ -32,7 +32,8 @@ proc set_lang_fortran {} {
 proc fortran_int4 {} {
     if {[test_compiler_info {gcc-4-[012]-*}]} {
 	return "int4"
-    } elseif {[test_compiler_info {gcc-*}]} {
+    } elseif {[test_compiler_info {gcc-*}]
+	      || [test_compiler_info {clang-*}]} {
 	return "integer\\(kind=4\\)"
     } elseif {[test_compiler_info {icc-*}]} {
 	return "INTEGER\\(4\\)"
@@ -44,7 +45,8 @@ proc fortran_int4 {} {
 proc fortran_int8 {} {
     if {[test_compiler_info {gcc-4-[012]-*}]} {
 	return "int8"
-    } elseif {[test_compiler_info {gcc-*}]} {
+    } elseif {[test_compiler_info {gcc-*}]
+	      || [test_compiler_info {clang-*}]} {
 	return "integer\\(kind=8\\)"
     } elseif {[test_compiler_info {icc-*}]} {
 	return "INTEGER\\(8\\)"
@@ -56,7 +58,8 @@ proc fortran_int8 {} {
 proc fortran_real4 {} {
     if {[test_compiler_info {gcc-4-[012]-*}]} {
 	return "real4"
-    } elseif {[test_compiler_info {gcc-*}]} {
+    } elseif {[test_compiler_info {gcc-*}]
+	      || [test_compiler_info {clang-*}]} {
 	return "real\\(kind=4\\)"
     } elseif {[test_compiler_info {icc-*}]} {
 	return "REAL\\(4\\)"
@@ -68,7 +71,8 @@ proc fortran_real4 {} {
 proc fortran_real8 {} {
     if {[test_compiler_info {gcc-4-[012]-*}]} {
 	return "real8"
-    } elseif {[test_compiler_info {gcc-*}]} {
+    } elseif {[test_compiler_info {gcc-*}]
+	      || [test_compiler_info {clang-*}]} {
 	return "real\\(kind=8\\)"
     } elseif {[test_compiler_info {icc-*}]} {
 	return "REAL\\(8\\)"
@@ -80,7 +84,8 @@ proc fortran_real8 {} {
 proc fortran_complex4 {} {
     if {[test_compiler_info {gcc-4-[012]-*}]} {
 	return "complex4"
-    } elseif {[test_compiler_info {gcc-*}]} {
+    } elseif {[test_compiler_info {gcc-*}]
+	      || [test_compiler_info {clang-*}]} {
 	return "complex\\(kind=4\\)"
     } elseif {[test_compiler_info {icc-*}]} {
 	return "COMPLEX\\(4\\)"
@@ -92,7 +97,8 @@ proc fortran_complex4 {} {
 proc fortran_logical4 {} {
     if {[test_compiler_info {gcc-4-[012]-*}]} {
 	return "logical4"
-    } elseif {[test_compiler_info {gcc-*}]} {
+    } elseif {[test_compiler_info {gcc-*}]
+	      || [test_compiler_info {clang-*}]} {
 	return "logical\\(kind=4\\)"
     } elseif {[test_compiler_info {icc-*}]} {
 	return "LOGICAL\\(4\\)"
@@ -104,7 +110,8 @@ proc fortran_logical4 {} {
 proc fortran_character1 {} {
     if {[test_compiler_info {gcc-4-[012]-*}]} {
 	return "character1"
-    } elseif {[test_compiler_info {gcc-*}]} {
+    } elseif {[test_compiler_info {gcc-*}]
+	      || [test_compiler_info {clang-*}]} {
 	return "character\\(kind=1\\)"
     } elseif {[test_compiler_info {icc-*}]} {
 	return "CHARACTER\\(1\\)"