; RUN: llc -aarch64-load-store-renaming=true -verify-machineinstrs -mtriple=arm64-linux-gnu -pre-RA-sched=linearize -enable-misched=false -disable-post-ra < %s | FileCheck %s
%va_list = type {ptr, ptr, ptr, i32, i32}
@var = dso_local global %va_list zeroinitializer, align 8
declare void @llvm.va_start(ptr)
define dso_local void @test_simple(i32 %n, ...) {
; CHECK-LABEL: test_simple:
; CHECK: sub sp, sp, #[[STACKSIZE:[0-9]+]]
; CHECK: add [[STACK_TOP:x[0-9]+]], sp, #[[STACKSIZE]]
; CHECK: adrp x[[VA_LIST_HI:[0-9]+]], var
; CHECK: add x[[VA_LIST:[0-9]+]], {{x[0-9]+}}, :lo12:var
; CHECK-DAG: stp x6, x7, [sp, #
; ... omit middle ones ...
; CHECK-DAG: str x1, [sp, #[[GR_BASE:[0-9]+]]]
; CHECK-DAG: stp q0, q1, [sp]
; ... omit middle ones ...
; CHECK-DAG: stp q6, q7, [sp, #
; CHECK: str [[STACK_TOP]], [x[[VA_LIST]]]
; CHECK: add [[GR_TOPTMP:x[0-9]+]], sp, #[[GR_BASE]]
; CHECK: add [[GR_TOP:x[0-9]+]], [[GR_TOPTMP]], #56
; CHECK: mov [[VR_TOPTMP:x[0-9]+]], sp
; CHECK: add [[VR_TOP:x[0-9]+]], [[VR_TOPTMP]], #128
; CHECK: stp [[GR_TOP]], [[VR_TOP]], [x[[VA_LIST]], #8]
; CHECK: mov [[GRVR:x[0-9]+]], #-56
; CHECK: movk [[GRVR]], #65408, lsl #32
; CHECK: str [[GRVR]], [x[[VA_LIST]], #24]
call void @llvm.va_start(ptr @var)
ret void
}
define dso_local void @test_fewargs(i32 %n, i32 %n1, i32 %n2, float %m, ...) {
; CHECK-LABEL: test_fewargs:
; CHECK: sub sp, sp, #[[STACKSIZE:[0-9]+]]
; CHECK: add [[STACK_TOP:x[0-9]+]], sp, #[[STACKSIZE]]
; CHECK: adrp x[[VA_LIST_HI:[0-9]+]], var
; CHECK: add x[[VA_LIST:[0-9]+]], {{x[0-9]+}}, :lo12:var
; CHECK-DAG: stp x6, x7, [sp, #
; ... omit middle ones ...
; CHECK-DAG: str x3, [sp, #[[GR_BASE:[0-9]+]]]
; CHECK-DAG: stp q6, q7, [sp, #80]
; ... omit middle ones ...
; CHECK-DAG: str q1, [sp]
; CHECK: str [[STACK_TOP]], [x[[VA_LIST]]]
; CHECK: add [[GR_TOPTMP:x[0-9]+]], sp, #[[GR_BASE]]
; CHECK: add [[GR_TOP:x[0-9]+]], [[GR_TOPTMP]], #40
; CHECK: mov [[VR_TOPTMP:x[0-9]+]], sp
; CHECK: add [[VR_TOP:x[0-9]+]], [[VR_TOPTMP]], #112
; CHECK: stp [[GR_TOP]], [[VR_TOP]], [x[[VA_LIST]], #8]
; CHECK: mov [[GRVR_OFFS:x[0-9]+]], #-40
; CHECK: movk [[GRVR_OFFS]], #65424, lsl #32
; CHECK: str [[GRVR_OFFS]], [x[[VA_LIST]], #24]
call void @llvm.va_start(ptr @var)
ret void
}
define dso_local void @test_nospare([8 x i64], [8 x float], ...) {
; CHECK-LABEL: test_nospare:
call void @llvm.va_start(ptr @var)
; CHECK-NOT: sub sp, sp
; CHECK: mov [[STACK:x[0-9]+]], sp
; CHECK: add x[[VAR:[0-9]+]], {{x[0-9]+}}, :lo12:var
; CHECK: str [[STACK]], [x[[VAR]]]
ret void
}
; If there are non-variadic arguments on the stack (here two i64s) then the
; __stack field should point just past them.
define dso_local void @test_offsetstack([8 x i64], [2 x i64], [3 x float], ...) {
; CHECK-LABEL: test_offsetstack:
; CHECK-DAG: stp {{q[0-9]+}}, {{q[0-9]+}}, [sp, #48]
; CHECK-DAG: stp {{q[0-9]+}}, {{q[0-9]+}}, [sp, #16]
; CHECK-DAG: str {{q[0-9]+}}, [sp]
; CHECK-DAG: add [[STACK_TOP:x[0-9]+]], sp, #96
; CHECK-DAG: add x[[VAR:[0-9]+]], {{x[0-9]+}}, :lo12:var
; CHECK-DAG: str [[STACK_TOP]], [x[[VAR]]]
call void @llvm.va_start(ptr @var)
ret void
}
declare void @llvm.va_end(ptr)
define dso_local void @test_va_end() nounwind {
; CHECK-LABEL: test_va_end:
; CHECK-NEXT: %bb.0
call void @llvm.va_end(ptr @var)
ret void
; CHECK-NEXT: ret
}
declare void @llvm.va_copy(ptr %dest, ptr %src)
@second_list = dso_local global %va_list zeroinitializer
define dso_local void @test_va_copy() {
; CHECK-LABEL: test_va_copy:
call void @llvm.va_copy(ptr @second_list, ptr @var)
; CHECK: add x[[SRC:[0-9]+]], {{x[0-9]+}}, :lo12:var
; CHECK: ldp [[BLOCKA:q[0-9]+]], [[BLOCKB:q[0-9]+]], [x[[SRC]]]
; CHECK: add x[[DST:[0-9]+]], {{x[0-9]+}}, :lo12:second_list
; CHECK: stp [[BLOCKA]], [[BLOCKB]], [x[[DST]]]
ret void
; CHECK: ret
}
Codebase Browser
llvm