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; RUN: llc < %s -mtriple=i686-windows -stackrealign | FileCheck %s
declare void @good(i32 %a, i32 %b, i32 %c, i32 %d)
declare void @oneparam(i32 %a)
declare void @eightparams(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h)
; When there is no reserved call frame, check that additional alignment
; is added when the pushes don't add up to the required alignment.
; CHECK-LABEL: test5:
; CHECK: subl $16, %esp
; CHECK-NEXT: pushl $4
; CHECK-NEXT: pushl $3
; CHECK-NEXT: pushl $2
; CHECK-NEXT: pushl $1
; CHECK-NEXT: call
define void @test5(i32 %k) {
entry:
%a = alloca i32, i32 %k
call void @good(i32 1, i32 2, i32 3, i32 4)
ret void
}
; When the alignment adds up, do the transformation
; CHECK-LABEL: test5b:
; CHECK: pushl $8
; CHECK-NEXT: pushl $7
; CHECK-NEXT: pushl $6
; CHECK-NEXT: pushl $5
; CHECK-NEXT: pushl $4
; CHECK-NEXT: pushl $3
; CHECK-NEXT: pushl $2
; CHECK-NEXT: pushl $1
; CHECK-NEXT: call
define void @test5b() optsize {
entry:
call void @eightparams(i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8)
ret void
}
; When having to compensate for the alignment isn't worth it,
; don't use pushes.
; CHECK-LABEL: test5c:
; CHECK: movl $1, (%esp)
; CHECK-NEXT: call
define void @test5c() optsize {
entry:
call void @oneparam(i32 1)
ret void
}
!llvm.module.flags = !{!0}
!0 = !{i32 2, !"override-stack-alignment", i32 32}
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