107 lines
3.3 KiB
LLVM
107 lines
3.3 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
||
|
|
; RUN: llc < %s -mtriple=i686-- -tailcallopt | FileCheck %s
|
||
|
|
|
||
|
|
; With -tailcallopt, CodeGen guarantees a tail call optimization
|
||
|
|
; for all of these.
|
||
|
|
|
||
|
|
declare fastcc i32 @tailcallee(i32 %a1, i32 %a2, i32 %a3, i32 %a4)
|
||
|
|
|
||
|
|
define dso_local fastcc i32 @tailcaller(i32 %in1, i32 %in2) nounwind {
|
||
|
|
; CHECK-LABEL: tailcaller:
|
||
|
|
; CHECK: # %bb.0: # %entry
|
||
|
|
; CHECK-NEXT: subl $16, %esp
|
||
|
|
; CHECK-NEXT: movl %ecx, {{[0-9]+}}(%esp)
|
||
|
|
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; CHECK-NEXT: movl %edx, {{[0-9]+}}(%esp)
|
||
|
|
; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
|
||
|
|
; CHECK-NEXT: addl $8, %esp
|
||
|
|
; CHECK-NEXT: jmp tailcallee@PLT # TAILCALL
|
||
|
|
entry:
|
||
|
|
%tmp11 = tail call fastcc i32 @tailcallee(i32 %in1, i32 %in2, i32 %in1, i32 %in2)
|
||
|
|
ret i32 %tmp11
|
||
|
|
}
|
||
|
|
|
||
|
|
declare fastcc i8* @alias_callee()
|
||
|
|
|
||
|
|
define fastcc noalias i8* @noalias_caller() nounwind {
|
||
|
|
; CHECK-LABEL: noalias_caller:
|
||
|
|
; CHECK: # %bb.0:
|
||
|
|
; CHECK-NEXT: jmp alias_callee@PLT # TAILCALL
|
||
|
|
%p = tail call fastcc i8* @alias_callee()
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
declare fastcc noalias i8* @noalias_callee()
|
||
|
|
|
||
|
|
define dso_local fastcc i8* @alias_caller() nounwind {
|
||
|
|
; CHECK-LABEL: alias_caller:
|
||
|
|
; CHECK: # %bb.0:
|
||
|
|
; CHECK-NEXT: jmp noalias_callee@PLT # TAILCALL
|
||
|
|
%p = tail call fastcc noalias i8* @noalias_callee()
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
declare fastcc i32 @i32_callee()
|
||
|
|
|
||
|
|
define dso_local fastcc i32 @ret_undef() nounwind {
|
||
|
|
; CHECK-LABEL: ret_undef:
|
||
|
|
; CHECK: # %bb.0:
|
||
|
|
; CHECK-NEXT: jmp i32_callee@PLT # TAILCALL
|
||
|
|
%p = tail call fastcc i32 @i32_callee()
|
||
|
|
ret i32 undef
|
||
|
|
}
|
||
|
|
|
||
|
|
declare fastcc void @does_not_return()
|
||
|
|
|
||
|
|
define dso_local fastcc i32 @noret() nounwind {
|
||
|
|
; CHECK-LABEL: noret:
|
||
|
|
; CHECK: # %bb.0:
|
||
|
|
; CHECK-NEXT: jmp does_not_return@PLT # TAILCALL
|
||
|
|
tail call fastcc void @does_not_return()
|
||
|
|
unreachable
|
||
|
|
}
|
||
|
|
|
||
|
|
define dso_local fastcc void @void_test(i32, i32, i32, i32) {
|
||
|
|
; CHECK-LABEL: void_test:
|
||
|
|
; CHECK: # %bb.0: # %entry
|
||
|
|
; CHECK-NEXT: pushl %esi
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 8
|
||
|
|
; CHECK-NEXT: subl $8, %esp
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 16
|
||
|
|
; CHECK-NEXT: .cfi_offset %esi, -8
|
||
|
|
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
|
||
|
|
; CHECK-NEXT: movl %esi, {{[0-9]+}}(%esp)
|
||
|
|
; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
|
||
|
|
; CHECK-NEXT: addl $8, %esp
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 8
|
||
|
|
; CHECK-NEXT: popl %esi
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 4
|
||
|
|
; CHECK-NEXT: jmp void_test # TAILCALL
|
||
|
|
entry:
|
||
|
|
tail call fastcc void @void_test( i32 %0, i32 %1, i32 %2, i32 %3)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define dso_local fastcc i1 @i1test(i32, i32, i32, i32) {
|
||
|
|
; CHECK-LABEL: i1test:
|
||
|
|
; CHECK: # %bb.0: # %entry
|
||
|
|
; CHECK-NEXT: pushl %esi
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 8
|
||
|
|
; CHECK-NEXT: subl $8, %esp
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 16
|
||
|
|
; CHECK-NEXT: .cfi_offset %esi, -8
|
||
|
|
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
|
||
|
|
; CHECK-NEXT: movl %esi, {{[0-9]+}}(%esp)
|
||
|
|
; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
|
||
|
|
; CHECK-NEXT: addl $8, %esp
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 8
|
||
|
|
; CHECK-NEXT: popl %esi
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 4
|
||
|
|
; CHECK-NEXT: jmp i1test # TAILCALL
|
||
|
|
entry:
|
||
|
|
%4 = tail call fastcc i1 @i1test( i32 %0, i32 %1, i32 %2, i32 %3)
|
||
|
|
ret i1 %4
|
||
|
|
}
|