forked from OSchip/llvm-project
95 lines
3.1 KiB
LLVM
95 lines
3.1 KiB
LLVM
; RUN: llc < %s -stack-symbol-ordering=0 -tailcallopt -code-model=medium -mtriple=i686-linux-gnu -mcpu=pentium | FileCheck %s
|
|
|
|
; Check the HiPE calling convention works (x86-32)
|
|
|
|
define void @zap(i32 %a, i32 %b) nounwind {
|
|
entry:
|
|
; CHECK: movl 40(%esp), %eax
|
|
; CHECK-NEXT: movl 44(%esp), %edx
|
|
; CHECK-NEXT: movl $8, %ecx
|
|
; CHECK-NEXT: calll addfour
|
|
%0 = call cc 11 {i32, i32, i32} @addfour(i32 undef, i32 undef, i32 %a, i32 %b, i32 8)
|
|
%res = extractvalue {i32, i32, i32} %0, 2
|
|
|
|
; CHECK: movl %eax, 16(%esp)
|
|
; CHECK-NEXT: movl $2, 12(%esp)
|
|
; CHECK-NEXT: movl $1, 8(%esp)
|
|
; CHECK: calll foo
|
|
tail call void @foo(i32 undef, i32 undef, i32 1, i32 2, i32 %res) nounwind
|
|
ret void
|
|
}
|
|
|
|
define cc 11 {i32, i32, i32} @addfour(i32 %hp, i32 %p, i32 %x, i32 %y, i32 %z) nounwind {
|
|
entry:
|
|
; CHECK: addl %edx, %eax
|
|
; CHECK-NEXT: addl %ecx, %eax
|
|
%0 = add i32 %x, %y
|
|
%1 = add i32 %0, %z
|
|
|
|
; CHECK: ret
|
|
%res = insertvalue {i32, i32, i32} undef, i32 %1, 2
|
|
ret {i32, i32, i32} %res
|
|
}
|
|
|
|
define cc 11 void @foo(i32 %hp, i32 %p, i32 %arg0, i32 %arg1, i32 %arg2) nounwind {
|
|
entry:
|
|
; CHECK: movl %esi, 16(%esp)
|
|
; CHECK-NEXT: movl %ebp, 12(%esp)
|
|
; CHECK-NEXT: movl %eax, 8(%esp)
|
|
; CHECK-NEXT: movl %edx, 4(%esp)
|
|
; CHECK-NEXT: movl %ecx, (%esp)
|
|
%hp_var = alloca i32
|
|
%p_var = alloca i32
|
|
%arg0_var = alloca i32
|
|
%arg1_var = alloca i32
|
|
%arg2_var = alloca i32
|
|
store i32 %hp, i32* %hp_var
|
|
store i32 %p, i32* %p_var
|
|
store i32 %arg0, i32* %arg0_var
|
|
store i32 %arg1, i32* %arg1_var
|
|
store i32 %arg2, i32* %arg2_var
|
|
; These loads are loading the values from their previous stores and are optimized away.
|
|
%0 = load i32, i32* %hp_var
|
|
%1 = load i32, i32* %p_var
|
|
%2 = load i32, i32* %arg0_var
|
|
%3 = load i32, i32* %arg1_var
|
|
%4 = load i32, i32* %arg2_var
|
|
; CHECK: jmp bar
|
|
tail call cc 11 void @bar(i32 %0, i32 %1, i32 %2, i32 %3, i32 %4) nounwind
|
|
ret void
|
|
}
|
|
|
|
define cc 11 void @baz() nounwind {
|
|
%tmp_clos = load i32, i32* @clos
|
|
%tmp_clos2 = inttoptr i32 %tmp_clos to i32*
|
|
%indirect_call = bitcast i32* %tmp_clos2 to void (i32, i32, i32)*
|
|
; CHECK: movl $42, %eax
|
|
; CHECK-NEXT: jmpl *clos
|
|
tail call cc 11 void %indirect_call(i32 undef, i32 undef, i32 42) nounwind
|
|
ret void
|
|
}
|
|
|
|
; Sanity-check the tail call sequence. Number of arguments was chosen as to
|
|
; expose a bug where the tail call sequence clobbered the stack.
|
|
define cc 11 { i32, i32, i32 } @tailcaller(i32 %hp, i32 %p) nounwind {
|
|
; CHECK: movl $15, %eax
|
|
; CHECK-NEXT: movl $31, %edx
|
|
; CHECK-NEXT: movl $47, %ecx
|
|
; CHECK-NEXT: popl %edi
|
|
; CHECK-NEXT: jmp tailcallee
|
|
%ret = tail call cc11 { i32, i32, i32 } @tailcallee(i32 %hp, i32 %p, i32 15,
|
|
i32 31, i32 47, i32 63) nounwind
|
|
ret { i32, i32, i32 } %ret
|
|
}
|
|
|
|
!hipe.literals = !{ !0, !1, !2 }
|
|
!0 = !{ !"P_NSP_LIMIT", i32 84 }
|
|
!1 = !{ !"X86_LEAF_WORDS", i32 24 }
|
|
!2 = !{ !"AMD64_LEAF_WORDS", i32 24 }
|
|
@clos = external dso_local constant i32
|
|
declare cc 11 void @bar(i32, i32, i32, i32, i32)
|
|
declare cc 11 { i32, i32, i32 } @tailcallee(i32, i32, i32, i32, i32, i32)
|
|
|
|
!llvm.module.flags = !{!3}
|
|
!3 = !{i32 2, !"override-stack-alignment", i32 4}
|