62 lines
2.0 KiB
LLVM
62 lines
2.0 KiB
LLVM
;Check 5.5 Parameter Passing --> Stage C --> C.5 statement, when NSAA is not
|
|
;equal to SP.
|
|
;
|
|
; Our purpose: make NSAA != SP, and only after start to use GPRs, then pass
|
|
; byval parameter and check that it goes to stack only.
|
|
;
|
|
;Co-Processor register candidates may be either in VFP or in stack, so after
|
|
;all VFP are allocated, stack is used. We can use stack without GPR allocation
|
|
;in that case, passing 9 f64 params, for example.
|
|
;First eight params goes to d0-d7, ninth one goes to the stack.
|
|
;Now, as 10th parameter, we pass i32, and it must go to R0.
|
|
;
|
|
;For more information,
|
|
;please, read 5.5 Parameter Passing, Stage C, stages C.2.cp, C.4 and C.5
|
|
;
|
|
;
|
|
;RUN: llc -mtriple=thumbv7-linux-gnueabihf -float-abi=hard < %s | FileCheck %s
|
|
|
|
%struct_t = type { i32, i32, i32, i32 }
|
|
@static_val = constant %struct_t { i32 777, i32 888, i32 999, i32 1000 }
|
|
declare void @fooUseStruct(%struct_t*)
|
|
|
|
define void @foo2(double %p0, ; --> D0
|
|
double %p1, ; --> D1
|
|
double %p2, ; --> D2
|
|
double %p3, ; --> D3
|
|
double %p4, ; --> D4
|
|
double %p5, ; --> D5
|
|
double %p6, ; --> D6
|
|
double %p7, ; --> D7
|
|
double %p8, ; --> Stack
|
|
i32 %p9, ; --> R0
|
|
%struct_t* byval %p10) ; --> Stack+8
|
|
{
|
|
entry:
|
|
;CHECK: push {r7, lr}
|
|
;CHECK-NOT: stm
|
|
;CHECK: add r0, sp, #16
|
|
;CHECK: bl fooUseStruct
|
|
call void @fooUseStruct(%struct_t* %p10)
|
|
|
|
ret void
|
|
}
|
|
|
|
define void @doFoo2() {
|
|
entry:
|
|
;CHECK-NOT: ldm
|
|
tail call void @foo2(double 23.0, ; --> D0
|
|
double 23.1, ; --> D1
|
|
double 23.2, ; --> D2
|
|
double 23.3, ; --> D3
|
|
double 23.4, ; --> D4
|
|
double 23.5, ; --> D5
|
|
double 23.6, ; --> D6
|
|
double 23.7, ; --> D7
|
|
double 23.8, ; --> Stack
|
|
i32 43, ; --> R0, not Stack+8
|
|
%struct_t* byval @static_val) ; --> Stack+8, not R1
|
|
ret void
|
|
}
|
|
|