1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -stack-symbol-ordering=0 -tailcallopt -code-model=medium -mtriple=i686-linux-gnu -mcpu=pentium | FileCheck %s
4 ; Check the HiPE calling convention works (x86-32)
6 define void @zap(i32 %a, i32 %b) nounwind {
8 ; CHECK: # %bb.0: # %entry
9 ; CHECK-NEXT: pushl %ebp
10 ; CHECK-NEXT: pushl %ebx
11 ; CHECK-NEXT: pushl %edi
12 ; CHECK-NEXT: pushl %esi
13 ; CHECK-NEXT: subl $20, %esp
14 ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
15 ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
16 ; CHECK-NEXT: movl $8, %ecx
17 ; CHECK-NEXT: calll addfour@PLT
18 ; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
19 ; CHECK-NEXT: movl $2, {{[0-9]+}}(%esp)
20 ; CHECK-NEXT: movl $1, {{[0-9]+}}(%esp)
21 ; CHECK-NEXT: calll foo@PLT
22 ; CHECK-NEXT: addl $20, %esp
23 ; CHECK-NEXT: popl %esi
24 ; CHECK-NEXT: popl %edi
25 ; CHECK-NEXT: popl %ebx
26 ; CHECK-NEXT: popl %ebp
29 %0 = call cc 11 {i32, i32, i32} @addfour(i32 undef, i32 undef, i32 %a, i32 %b, i32 8)
30 %res = extractvalue {i32, i32, i32} %0, 2
32 tail call void @foo(i32 undef, i32 undef, i32 1, i32 2, i32 %res) nounwind
36 define cc 11 {i32, i32, i32} @addfour(i32 %hp, i32 %p, i32 %x, i32 %y, i32 %z) nounwind {
37 ; CHECK-LABEL: addfour:
38 ; CHECK: # %bb.0: # %entry
39 ; CHECK-NEXT: addl %edx, %eax
40 ; CHECK-NEXT: addl %ecx, %eax
46 %res = insertvalue {i32, i32, i32} undef, i32 %1, 2
47 ret {i32, i32, i32} %res
50 define cc 11 void @foo(i32 %hp, i32 %p, i32 %arg0, i32 %arg1, i32 %arg2) nounwind {
52 ; CHECK: # %bb.0: # %entry
53 ; CHECK-NEXT: subl $20, %esp
54 ; CHECK-NEXT: movl %esi, {{[0-9]+}}(%esp)
55 ; CHECK-NEXT: movl %ebp, {{[0-9]+}}(%esp)
56 ; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
57 ; CHECK-NEXT: movl %edx, {{[0-9]+}}(%esp)
58 ; CHECK-NEXT: movl %ecx, (%esp)
59 ; CHECK-NEXT: addl $20, %esp
60 ; CHECK-NEXT: jmp bar@PLT # TAILCALL
64 %arg0_var = alloca i32
65 %arg1_var = alloca i32
66 %arg2_var = alloca i32
67 store i32 %hp, ptr %hp_var
68 store i32 %p, ptr %p_var
69 store i32 %arg0, ptr %arg0_var
70 store i32 %arg1, ptr %arg1_var
71 store i32 %arg2, ptr %arg2_var
72 ; These loads are loading the values from their previous stores and are optimized away.
73 %0 = load i32, ptr %hp_var
74 %1 = load i32, ptr %p_var
75 %2 = load i32, ptr %arg0_var
76 %3 = load i32, ptr %arg1_var
77 %4 = load i32, ptr %arg2_var
78 tail call cc 11 void @bar(i32 %0, i32 %1, i32 %2, i32 %3, i32 %4) nounwind
82 define cc 11 void @baz() nounwind {
85 ; CHECK-NEXT: movl $42, %eax
86 ; CHECK-NEXT: jmpl *clos # TAILCALL
87 %tmp_clos = load i32, ptr @clos
88 %tmp_clos2 = inttoptr i32 %tmp_clos to ptr
89 tail call cc 11 void %tmp_clos2(i32 undef, i32 undef, i32 42) nounwind
93 ; Sanity-check the tail call sequence. Number of arguments was chosen as to
94 ; expose a bug where the tail call sequence clobbered the stack.
95 define cc 11 { i32, i32, i32 } @tailcaller(i32 %hp, i32 %p) nounwind {
96 ; CHECK-LABEL: tailcaller:
98 ; CHECK-NEXT: subl $8, %esp
99 ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
100 ; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
101 ; CHECK-NEXT: movl $63, {{[0-9]+}}(%esp)
102 ; CHECK-NEXT: movl $15, %eax
103 ; CHECK-NEXT: movl $31, %edx
104 ; CHECK-NEXT: movl $47, %ecx
105 ; CHECK-NEXT: popl %edi
106 ; CHECK-NEXT: jmp tailcallee@PLT # TAILCALL
107 %ret = tail call cc11 { i32, i32, i32 } @tailcallee(i32 %hp, i32 %p, i32 15,
108 i32 31, i32 47, i32 63) nounwind
109 ret { i32, i32, i32 } %ret
112 !hipe.literals = !{ !0, !1, !2 }
113 !0 = !{ !"P_NSP_LIMIT", i32 84 }
114 !1 = !{ !"X86_LEAF_WORDS", i32 24 }
115 !2 = !{ !"AMD64_LEAF_WORDS", i32 24 }
116 @clos = external dso_local constant i32
117 declare cc 11 void @bar(i32, i32, i32, i32, i32)
118 declare cc 11 { i32, i32, i32 } @tailcallee(i32, i32, i32, i32, i32, i32)
120 !llvm.module.flags = !{!3}
121 !3 = !{i32 2, !"override-stack-alignment", i32 4}