1 files changed, 82 insertions, 0 deletions
diff --git a/test/Verifier/musttail-invalid.ll b/test/Verifier/musttail-invalid.ll
new file mode 100644
index 0000000..e5f9a40
--- /dev/null
+++ b/test/Verifier/musttail-invalid.ll
@@ -0,0 +1,82 @@
+; RUN: not llvm-as %s -o /dev/null 2>&1 | FileCheck %s
+
+; Each musttail call should fail to validate.
+
+declare x86_stdcallcc void @cc_mismatch_callee()
+define void @cc_mismatch() {
+; CHECK: mismatched calling conv
+  musttail call x86_stdcallcc void @cc_mismatch_callee()
+  ret void
+}
+
+declare void @more_parms_callee(i32)
+define void @more_parms() {
+; CHECK: mismatched parameter counts
+  musttail call void @more_parms_callee(i32 0)
+  ret void
+}
+
+declare void @mismatched_intty_callee(i8)
+define void @mismatched_intty(i32) {
+; CHECK: mismatched parameter types
+  musttail call void @mismatched_intty_callee(i8 0)
+  ret void
+}
+
+declare void @mismatched_vararg_callee(i8*, ...)
+define void @mismatched_vararg(i8*) {
+; CHECK: mismatched varargs
+  musttail call void (i8*, ...)* @mismatched_vararg_callee(i8* null)
+  ret void
+}
+
+; We would make this an implicit sret parameter, which would disturb the
+; tail call.
+declare { i32, i32, i32 } @mismatched_retty_callee(i32)
+define void @mismatched_retty(i32) {
+; CHECK: mismatched return types
+  musttail call { i32, i32, i32 } @mismatched_retty_callee(i32 0)
+  ret void
+}
+
+declare void @mismatched_byval_callee({ i32 }*)
+define void @mismatched_byval({ i32 }* byval %a) {
+; CHECK: mismatched ABI impacting function attributes
+  musttail call void @mismatched_byval_callee({ i32 }* %a)
+  ret void
+}
+
+declare void @mismatched_inreg_callee(i32 inreg)
+define void @mismatched_inreg(i32 %a) {
+; CHECK: mismatched ABI impacting function attributes
+  musttail call void @mismatched_inreg_callee(i32 inreg %a)
+  ret void
+}
+
+declare void @mismatched_sret_callee(i32* sret)
+define void @mismatched_sret(i32* %a) {
+; CHECK: mismatched ABI impacting function attributes
+  musttail call void @mismatched_sret_callee(i32* sret %a)
+  ret void
+}
+
+declare void @mismatched_alignment_callee(i32* byval align 8)
+define void @mismatched_alignment(i32* byval align 4 %a) {
+; CHECK: mismatched ABI impacting function attributes
+  musttail call void @mismatched_alignment_callee(i32* byval align 8 %a)
+  ret void
+}
+
+declare i32 @not_tail_pos_callee()
+define i32 @not_tail_pos() {
+; CHECK: musttail call must be precede a ret with an optional bitcast
+  %v = musttail call i32 @not_tail_pos_callee()
+  %w = add i32 %v, 1
+  ret i32 %w
+}
+
+define void @inline_asm() {
+; CHECK: cannot use musttail call with inline asm
+  musttail call void asm "ret", ""()
+  ret void
+}