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Diffstat (limited to 'test/CodeGen/X86/tailcallstack64.ll')
| -rw-r--r-- | test/CodeGen/X86/tailcallstack64.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/CodeGen/X86/tailcallstack64.ll b/test/CodeGen/X86/tailcallstack64.ll new file mode 100644 index 0000000000..d734065c00 --- /dev/null +++ b/test/CodeGen/X86/tailcallstack64.ll @@ -0,0 +1,21 @@ +; RUN: llvm-as < %s | llc -tailcallopt -march=x86-64 | grep TAILCALL +; Check that lowered arguments on the stack do not overwrite each other. +; Move param %in1 to temp register (%eax). +; RUN: llvm-as < %s | llc -tailcallopt -march=x86-64 -x86-asm-syntax=att | grep {movl 40(%rsp), %eax} +; Add %in1 %p1 to another temporary register (%r9d). +; RUN: llvm-as < %s | llc -tailcallopt -march=x86-64 -x86-asm-syntax=att | grep {movl %edi, %r9d} +; RUN: llvm-as < %s | llc -tailcallopt -march=x86-64 -x86-asm-syntax=att | grep {addl 32(%rsp), %r9d} +; Move result of addition to stack. +; RUN: llvm-as < %s | llc -tailcallopt -march=x86-64 -x86-asm-syntax=att | grep {movl %r9d, 40(%rsp)} +; Move param %in2 to stack. +; RUN: llvm-as < %s | llc -tailcallopt -march=x86-64 -x86-asm-syntax=att | grep {movl %eax, 32(%rsp)} + +declare fastcc i32 @tailcallee(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %a, i32 %b) + +define fastcc i32 @tailcaller(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %in1, i32 %in2) { +entry: + %tmp = add i32 %in1, %p1 + %retval = tail call fastcc i32 @tailcallee(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %in2,i32 %tmp) + ret i32 %retval +} + |