1 ; RUN: llc < %s -stack-symbol-ordering=0 -tailcallopt -code-model=medium -stack-alignment=4 -mtriple=i686-linux-gnu -mcpu=pentium | FileCheck %s 2 3 ; Check the HiPE calling convention works (x86-32) 4 5 define void @zap(i32 %a, i32 %b) nounwind { 6 entry: 7 ; CHECK: movl 40(%esp), %eax 8 ; CHECK-NEXT: movl 44(%esp), %edx 9 ; CHECK-NEXT: movl $8, %ecx 10 ; CHECK-NEXT: calll addfour 11 %0 = call cc 11 {i32, i32, i32} @addfour(i32 undef, i32 undef, i32 %a, i32 %b, i32 8) 12 %res = extractvalue {i32, i32, i32} %0, 2 13 14 ; CHECK: movl %eax, 16(%esp) 15 ; CHECK-NEXT: movl $2, 12(%esp) 16 ; CHECK-NEXT: movl $1, 8(%esp) 17 ; CHECK: calll foo 18 tail call void @foo(i32 undef, i32 undef, i32 1, i32 2, i32 %res) nounwind 19 ret void 20 } 21 22 define cc 11 {i32, i32, i32} @addfour(i32 %hp, i32 %p, i32 %x, i32 %y, i32 %z) nounwind { 23 entry: 24 ; CHECK: addl %edx, %eax 25 ; CHECK-NEXT: addl %ecx, %eax 26 %0 = add i32 %x, %y 27 %1 = add i32 %0, %z 28 29 ; CHECK: ret 30 %res = insertvalue {i32, i32, i32} undef, i32 %1, 2 31 ret {i32, i32, i32} %res 32 } 33 34 define cc 11 void @foo(i32 %hp, i32 %p, i32 %arg0, i32 %arg1, i32 %arg2) nounwind { 35 entry: 36 ; CHECK: movl %esi, 16(%esp) 37 ; CHECK-NEXT: movl %ebp, 12(%esp) 38 ; CHECK-NEXT: movl %eax, 8(%esp) 39 ; CHECK-NEXT: movl %edx, 4(%esp) 40 ; CHECK-NEXT: movl %ecx, (%esp) 41 %hp_var = alloca i32 42 %p_var = alloca i32 43 %arg0_var = alloca i32 44 %arg1_var = alloca i32 45 %arg2_var = alloca i32 46 store i32 %hp, i32* %hp_var 47 store i32 %p, i32* %p_var 48 store i32 %arg0, i32* %arg0_var 49 store i32 %arg1, i32* %arg1_var 50 store i32 %arg2, i32* %arg2_var 51 ; These loads are loading the values from their previous stores and are optimized away. 52 %0 = load i32, i32* %hp_var 53 %1 = load i32, i32* %p_var 54 %2 = load i32, i32* %arg0_var 55 %3 = load i32, i32* %arg1_var 56 %4 = load i32, i32* %arg2_var 57 ; CHECK: jmp bar 58 tail call cc 11 void @bar(i32 %0, i32 %1, i32 %2, i32 %3, i32 %4) nounwind 59 ret void 60 } 61 62 define cc 11 void @baz() nounwind { 63 %tmp_clos = load i32, i32* @clos 64 %tmp_clos2 = inttoptr i32 %tmp_clos to i32* 65 %indirect_call = bitcast i32* %tmp_clos2 to void (i32, i32, i32)* 66 ; CHECK: movl $42, %eax 67 ; CHECK-NEXT: jmpl *clos 68 tail call cc 11 void %indirect_call(i32 undef, i32 undef, i32 42) nounwind 69 ret void 70 } 71 72 ; Sanity-check the tail call sequence. Number of arguments was chosen as to 73 ; expose a bug where the tail call sequence clobbered the stack. 74 define cc 11 { i32, i32, i32 } @tailcaller(i32 %hp, i32 %p) nounwind { 75 ; CHECK: movl $15, %eax 76 ; CHECK-NEXT: movl $31, %edx 77 ; CHECK-NEXT: movl $47, %ecx 78 ; CHECK-NEXT: popl %edi 79 ; CHECK-NEXT: jmp tailcallee 80 %ret = tail call cc11 { i32, i32, i32 } @tailcallee(i32 %hp, i32 %p, i32 15, 81 i32 31, i32 47, i32 63) nounwind 82 ret { i32, i32, i32 } %ret 83 } 84 85 !hipe.literals = !{ !0, !1, !2 } 86 !0 = !{ !"P_NSP_LIMIT", i32 84 } 87 !1 = !{ !"X86_LEAF_WORDS", i32 24 } 88 !2 = !{ !"AMD64_LEAF_WORDS", i32 24 } 89 @clos = external constant i32 90 declare cc 11 void @bar(i32, i32, i32, i32, i32) 91 declare cc 11 { i32, i32, i32 } @tailcallee(i32, i32, i32, i32, i32, i32) 92
