llvm.org GIT mirror llvm / release_38 test / CodeGen / ARM / 2013-05-02-AAPCS-ByVal-Structs-C4-C5-VFP.ll
release_38

Tree @release_38 (Download .tar.gz)

2013-05-02-AAPCS-ByVal-Structs-C4-C5-VFP.ll @release_38raw · history · blame

;Check AAPCS, 5.5 Parameters Passing, C4 and C5 rules.
;Check case when NSAA != 0, and NCRN < R4, NCRN+ParamSize < R4
;RUN: llc -mtriple=thumbv7-linux-gnueabihf -float-abi=hard < %s | FileCheck %s

%st_t = type { i32, i32 }
@static_val = constant %st_t { i32 777, i32 888}

declare void @fooUseStruct(%st_t*)

define void @foo(double %vfp0,     ; --> D0,     NSAA=SP
                 double %vfp1,     ; --> D1,     NSAA=SP
		 double %vfp2,     ; --> D2,     NSAA=SP
		 double %vfp3,     ; --> D3,     NSAA=SP
		 double %vfp4,     ; --> D4,     NSAA=SP
		 double %vfp5,     ; --> D5,     NSAA=SP
		 double %vfp6,     ; --> D6,     NSAA=SP
		 double %vfp7,     ; --> D7,     NSAA=SP
		 double %vfp8,     ; --> SP,     NSAA=SP+8 (!)
                 i32 %p0,          ; --> R0,     NSAA=SP+8 
		 %st_t* byval %p1, ; --> R1, R2, NSAA=SP+8
		 i32 %p2,          ; --> R3,     NSAA=SP+8 
                 i32 %p3) #0 {     ; --> SP+4,   NSAA=SP+12
entry:
  ;CHECK: sub sp, #12
  ;CHECK: push {r7, lr}
  ;CHECK: sub sp, #4
  ;CHECK: add r0, sp, #12
  ;CHECK: strd r1, r2, [sp, #12]
  ;CHECK: bl  fooUseStruct
  call void @fooUseStruct(%st_t* %p1)
  ret void
}

define void @doFoo() {
entry:
  call void @foo(double 23.0,
                 double 23.1,
                 double 23.2,
                 double 23.3,
                 double 23.4,
                 double 23.5,
                 double 23.6,
                 double 23.7,
                 double 23.8,
                 i32 0, %st_t* byval @static_val, i32 1, i32 2)
  ret void
}