Driver: add stack protector tests for riscv

Add tests ensuring that the driver correctly handles stack protector
guard options for risc-v.

Signed-off-by: Keith Packard <[email protected]>

Author: keith-packard

clang/test/CodeGen/stack-protector-guard.c

@@ -9,6 +9,9 @@
 // RUN: %clang_cc1 -mstack-protector-guard=sysreg -triple aarch64-linux-gnu \
 // RUN:   -mstack-protector-guard-offset=1024 -mstack-protector-guard-reg=sp_el0 \
 // RUN:   -emit-llvm %s -o - | FileCheck %s --check-prefix=AARCH64
+// RUN: %clang_cc1 -mstack-protector-guard=tls -triple riscv64-unknown-elf \
+// RUN:   -mstack-protector-guard-offset=44 -mstack-protector-guard-reg=tp \
+// RUN:   -emit-llvm %s -o - | FileCheck %s --check-prefix=RISCV
 void foo(int*);
 void bar(int x) {
   int baz[x];
@@ -23,3 +26,9 @@ void bar(int x) {
 // AARCH64: [[ATTR1]] = !{i32 1, !"stack-protector-guard", !"sysreg"}
 // AARCH64: [[ATTR2]] = !{i32 1, !"stack-protector-guard-reg", !"sp_el0"}
 // AARCH64: [[ATTR3]] = !{i32 1, !"stack-protector-guard-offset", i32 1024}
+
+// RISCV: !llvm.module.flags = !{{{.*}}[[ATTR1:![0-9]+]], [[ATTR2:![0-9]+]], [[ATTR3:![0-9]+]], [[ATTR4:![0-9]+]]}
+// RISCV: [[ATTR1]] = !{i32 1, !"stack-protector-guard", !"tls"}
+// RISCV: [[ATTR2]] = !{i32 1, !"stack-protector-guard-reg", !"tp"}
+// RISCV: [[ATTR3]] = !{i32 1, !"stack-protector-guard-offset", i32 44}
+

clang/test/Driver/stack-protector-guard.c

@@ -85,3 +85,15 @@
 // CHECK-AARCH64: "-cc1" {{.*}}"-mstack-protector-guard=sysreg" "-mstack-protector-guard-offset=0" "-mstack-protector-guard-reg=sp_el0"
 // INVALID-VALUE-AARCH64: error: invalid value 'tls' in 'mstack-protector-guard=', expected one of: sysreg global
 // INVALID-REG-AARCH64: error: invalid value 'foo' in 'mstack-protector-guard-reg='
+
+// RUN: not %clang -target riscv64-unknown-elf -mstack-protector-guard=tls %s 2>&1 | \
+// RUN:   FileCheck -check-prefix=MISSING-OFFSET %s
+
+// RUN: not %clang -target riscv64-unknown-elf -mstack-protector-guard=sysreg %s 2>&1 | \
+// RUN:   FileCheck -check-prefix=INVALID-VALUE2 %s
+
+// RUN: not %clang -target riscv64-unknown-elf -mstack-protector-guard=tls \
+// RUN: -mstack-protector-guard-offset=20 -mstack-protector-guard-reg=sp %s 2>&1 | \
+// RUN:   FileCheck -check-prefix=INVALID-REG-RISCV %s
+
+// INVALID-REG-RISCV: error: invalid value 'sp' in 'mstack-protector-guard-reg=', expected one of: tp