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[X86] Adding the test pointing to the fail case of D45653 

Summary:
This commit adds the case of tail calling a sret function from a non-sret
function when both functions have the C calling convention.

llvm-svn: 340737
This commit is contained in:
Aleksandr Urakov 2018-08-27 11:56:32 +00:00
parent db474c12e9
commit ff88f1763b
1 changed files with 29 additions and 0 deletions
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29
llvm/test/CodeGen/X86/sibcall.ll
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@ -701,3 +701,32 @@ define fastcc void @t21_non_sret_to_sret(%struct.foo* %agg.result) nounwind {
declare fastcc void @t21_f_sret(%struct.foo* noalias sret) nounwind
declare fastcc void @t21_f_non_sret(%struct.foo*) nounwind
define ccc void @t22_non_sret_to_sret(%struct.foo* %agg.result) nounwind {
; X86-LABEL: t22_non_sret_to_sret:
; X86: # %bb.0:
; X86-NEXT: subl $12, %esp
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl %eax, (%esp)
; X86-NEXT: calll t22_f_sret
; X86-NEXT: addl $8, %esp
; X86-NEXT: retl
;
; X64-LABEL: t22_non_sret_to_sret:
; X64: # %bb.0:
; X64-NEXT: pushq %rax
; X64-NEXT: callq t22_f_sret
; X64-NEXT: popq %rax
; X64-NEXT: retq
;
; X32-LABEL: t22_non_sret_to_sret:
; X32: # %bb.0:
; X32-NEXT: pushq %rax
; X32-NEXT: callq t22_f_sret
; X32-NEXT: popq %rax
; X32-NEXT: retq
tail call ccc void @t22_f_sret(%struct.foo* noalias sret %agg.result) nounwind
ret void
}
declare ccc void @t22_f_sret(%struct.foo* noalias sret) nounwind