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llvm-mirror/test/CodeGen/ARM/2014-02-21-byval-reg-split-alignment.ll

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; RUN: llc -mtriple=arm-linux-gnueabihf < %s | FileCheck %s
%struct4bytes = type { i32 }
%struct8bytes8align = type { i64 }
%struct12bytes = type { i32, i32, i32 }
declare void @useIntPtr(%struct4bytes*)
declare void @useLong(i64)
declare void @usePtr(%struct8bytes8align*)
; a -> r0
; b -> r1..r3
; c -> sp+0..sp+7
define void @foo1(i32 %a, %struct12bytes* byval %b, i64 %c) {
; CHECK-LABEL: foo1
; CHECK: sub sp, sp, #16
; CHECK: push {r11, lr}
; CHECK: add [[SCRATCH:r[0-9]+]], sp, #12
; CHECK: stm [[SCRATCH]], {r1, r2, r3}
; CHECK: ldr r0, [sp, #24]
; CHECK: ldr r1, [sp, #28]
; CHECK: bl useLong
; CHECK: pop {r11, lr}
; CHECK: add sp, sp, #16
call void @useLong(i64 %c)
ret void
}
; a -> r0
; b -> r2..r3
define void @foo2(i32 %a, %struct8bytes8align* byval %b) {
; CHECK-LABEL: foo2
; CHECK: sub sp, sp, #8
; CHECK: push {r11, lr}
; CHECK: add r0, sp, #8
; CHECK: str r3, [sp, #12]
; CHECK: str r2, [sp, #8]
; CHECK: bl usePtr
; CHECK: pop {r11, lr}
; CHECK: add sp, sp, #8
call void @usePtr(%struct8bytes8align* %b)
ret void
}
; a -> r0..r1
; b -> r2
define void @foo3(%struct8bytes8align* byval %a, %struct4bytes* byval %b) {
; CHECK-LABEL: foo3
; CHECK: sub sp, sp, #16
; CHECK: push {r11, lr}
; CHECK: add [[SCRATCH:r[0-9]+]], sp, #8
; CHECK: stm [[SCRATCH]], {r0, r1, r2}
; CHECK: add r0, sp, #8
; CHECK: bl usePtr
; CHECK: pop {r11, lr}
; CHECK: add sp, sp, #16
call void @usePtr(%struct8bytes8align* %a)
ret void
}
; a -> r0
; b -> r2..r3
define void @foo4(%struct4bytes* byval %a, %struct8bytes8align* byval %b) {
; CHECK-LABEL: foo4
; CHECK: sub sp, sp, #16
; CHECK: push {r11, lr}
; CHECK: str r0, [sp, #8]
; CHECK: add r0, sp, #16
; CHECK: str r3, [sp, #20]
; CHECK: str r2, [sp, #16]
; CHECK: bl usePtr
; CHECK: pop {r11, lr}
; CHECK: add sp, sp, #16
; CHECK: mov pc, lr
call void @usePtr(%struct8bytes8align* %b)
ret void
}
; a -> r0..r1
; b -> r2
; c -> r3
define void @foo5(%struct8bytes8align* byval %a, %struct4bytes* byval %b, %struct4bytes* byval %c) {
; CHECK-LABEL: foo5
; CHECK: sub sp, sp, #16
; CHECK: push {r11, lr}
; CHECK: add [[SCRATCH:r[0-9]+]], sp, #8
; CHECK: stm [[SCRATCH]], {r0, r1, r2, r3}
; CHECK: add r0, sp, #8
; CHECK: bl usePtr
; CHECK: pop {r11, lr}
; CHECK: add sp, sp, #16
; CHECK: mov pc, lr
call void @usePtr(%struct8bytes8align* %a)
ret void
}
; a..c -> r0..r2
; d -> sp+0..sp+7
define void @foo6(i32 %a, i32 %b, i32 %c, %struct8bytes8align* byval %d) {
; CHECK-LABEL: foo6
; CHECK: push {r11, lr}
; CHECK: add r0, sp, #8
; CHECK: bl usePtr
; CHECK: pop {r11, lr}
; CHECK: mov pc, lr
call void @usePtr(%struct8bytes8align* %d)
ret void
}