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