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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc < %s -mtriple=i386 --frame-pointer=all | FileCheck %s
; ISel will try to fold pointer arithmetic into the address displacement. However, we don't
; want to do that if the offset is very close to the expressible limit because the final frame
; layout may push it over/under the limit.
define i32 @foo(i1 %b) #0 {
; CHECK-LABEL: foo:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: pushl %ebp
; CHECK-NEXT: .cfi_def_cfa_offset 8
; CHECK-NEXT: .cfi_offset %ebp, -8
; CHECK-NEXT: movl %esp, %ebp
; CHECK-NEXT: .cfi_def_cfa_register %ebp
; CHECK-NEXT: subl $8, %esp
; CHECK-NEXT: movl __stack_chk_guard, %eax
; CHECK-NEXT: movl %eax, -4(%ebp)
; CHECK-NEXT: testb $1, 8(%ebp)
; CHECK-NEXT: jne .LBB0_1
; CHECK-NEXT: # %bb.2: # %entry
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: jmp .LBB0_3
; CHECK-NEXT: .LBB0_1:
; CHECK-NEXT: movl $-2147483647, %eax # imm = 0x80000001
; CHECK-NEXT: leal -5(%ebp,%eax), %eax
; CHECK-NEXT: .LBB0_3: # %entry
; CHECK-NEXT: movl __stack_chk_guard, %ecx
; CHECK-NEXT: cmpl -4(%ebp), %ecx
; CHECK-NEXT: jne .LBB0_5
; CHECK-NEXT: # %bb.4: # %entry
; CHECK-NEXT: addl $8, %esp
; CHECK-NEXT: popl %ebp
; CHECK-NEXT: .cfi_def_cfa %esp, 4
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB0_5: # %entry
; CHECK-NEXT: .cfi_def_cfa %ebp, 8
; CHECK-NEXT: calll __stack_chk_fail
entry:
%a = alloca i8, align 1
%0 = ptrtoint ptr %a to i32
%sub = add i32 %0, -2147483647
%retval.0 = select i1 %b, i32 %sub, i32 0
ret i32 %retval.0
}
attributes #0 = { sspreq }
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