File: stack-align.ll

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llvm-toolchain-14 1%3A14.0.6-12
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; RUN: llc -march=sparc < %s | FileCheck %s --check-prefixes=CHECK,CHECK32
; RUN: llc -march=sparcv9 < %s | FileCheck %s --check-prefixes=CHECK,CHECK64
declare void @stack_realign_helper(i32 %a, i32* %b)

;; This is a function where we have a local variable of 64-byte
;; alignment.  We want to see that the stack is aligned (the initial
;; andn), that the local var is accessed via stack pointer (to %o1), and that
;; the argument is accessed via frame pointer not stack pointer (to %o0).

;; CHECK-LABEL: stack_realign:
;; CHECK32:      andn %sp, 63, %sp
;; CHECK32-NEXT: ld [%fp+92], %o0
;; CHECK64:      add %sp, 2047, %g1
;; CHECK64-NEXT: andn %g1, 63, %g1
;; CHECK64-NEXT: add %g1, -2047, %sp
;; CHECK64-NEXT: ld [%fp+2227], %o0
;; CHECK-NEXT:   call stack_realign_helper
;; CHECK32-NEXT: add %sp, 128, %o1
;; CHECK64-NEXT: add %sp, 2239, %o1

define void @stack_realign(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g) {
entry:
  %aligned = alloca i32, align 64
  call void @stack_realign_helper(i32 %g, i32* %aligned)
  ret void
}