1 ;Check 5.5 Parameter Passing --> Stage C --> C.5 statement, when NSAA is not
4 ; Our purpose: make NSAA != SP, and only after start to use GPRs, then pass
5 ; byval parameter and check that it goes to stack only.
7 ;Co-Processor register candidates may be either in VFP or in stack, so after
8 ;all VFP are allocated, stack is used. We can use stack without GPR allocation
9 ;in that case, passing 9 f64 params, for example.
10 ;First eight params goes to d0-d7, ninth one goes to the stack.
11 ;Now, as 10th parameter, we pass i32, and it must go to R0.
13 ;For more information,
14 ;please, read 5.5 Parameter Passing, Stage C, stages C.2.cp, C.4 and C.5
17 ;RUN: llc -mtriple=thumbv7-linux-gnueabihf -float-abi=hard < %s | FileCheck %s
19 %struct_t = type { i32, i32, i32, i32 }
20 @static_val = constant %struct_t { i32 777, i32 888, i32 999, i32 1000 }
21 declare void @fooUseStruct(%struct_t*)
23 define void @foo2(double %p0, ; --> D0
31 double %p8, ; --> Stack
33 %struct_t* byval(%struct_t) %p10) ; --> Stack+8
38 ;CHECK: add r0, sp, #16
39 ;CHECK: bl fooUseStruct
40 call void @fooUseStruct(%struct_t* %p10)
45 define void @doFoo2() {
48 tail call void @foo2(double 23.0, ; --> D0
56 double 23.8, ; --> Stack
57 i32 43, ; --> R0, not Stack+8
58 %struct_t* byval(%struct_t) @static_val) ; --> Stack+8, not R1