llvm.org GIT mirror llvm / 9e24ab7 test / CodeGen / PowerPC / ppc64-align-long-double.ll
9e24ab7

Tree @9e24ab7 (Download .tar.gz)

ppc64-align-long-double.ll @9e24ab7raw · history · blame

; RUN: llc -mcpu=pwr7 -O0 -fast-isel=false -mattr=-vsx < %s | FileCheck %s
; RUN: llc -mcpu=pwr7 -O0 -fast-isel=false -mattr=+vsx < %s | FileCheck -check-prefix=CHECK-VSX %s

; Verify internal alignment of long double in a struct.  The double
; argument comes in in GPR3; GPR4 is skipped; GPRs 5 and 6 contain
; the long double.  Check that these are stored to proper locations
; in the parameter save area and loaded from there for return in FPR1/2.

target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"

%struct.S = type { double, ppc_fp128 }

define ppc_fp128 @test(%struct.S* byval %x) nounwind {
entry:
  %b = getelementptr inbounds %struct.S, %struct.S* %x, i32 0, i32 1
  %0 = load ppc_fp128, ppc_fp128* %b, align 16
  ret ppc_fp128 %0
}

; CHECK: std 6, 72(1)
; CHECK: std 5, 64(1)
; CHECK: std 4, 56(1)
; CHECK: std 3, 48(1)
; CHECK: lfd 1, 64(1)
; CHECK: lfd 2, 72(1)

; CHECK-VSX: std 6, 72(1)
; CHECK-VSX: std 5, 64(1)
; CHECK-VSX: std 4, 56(1)
; CHECK-VSX: std 3, 48(1)
; CHECK-VSX: li 3, 16
; CHECK-VSX: addi 4, 1, 48
; CHECK-VSX: lxsdx 1, 4, 3
; CHECK-VSX: li 3, 24
; CHECK-VSX: lxsdx 2, 4, 3