llvm-6502/test/CodeGen/PowerPC/vrsave-spill.ll
Hal Finkel b7e11e400d Don't spill PPC VRSAVE on non-Darwin (even in SjLj)
As Bill Schmidt pointed out to me, only on Darwin do we need to spill/restore
VRSAVE in the SjLj code. For non-Darwin, don't spill/restore VRSAVE (and I've
added some asserts to make sure that we're not).

As it turns out, we're not currently handling the Darwin case correctly (I've
added a FIXME in the test case). I've tried adding various implied register
definitions/uses to force the spill without success, so I'll need to address
this later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178096 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-27 00:02:20 +00:00

20 lines
626 B
LLVM

; RUN: llc < %s -mtriple=powerpc64-apple-darwin -mcpu=g5 | FileCheck %s
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-apple-darwin"
define <4 x float> @foo(<4 x float> %a, <4 x float> %b) nounwind {
entry:
%c = fadd <4 x float> %a, %b
%d = fmul <4 x float> %c, %a
call void asm sideeffect "", "~{VRsave}"() nounwind
br label %return
; CHECK: @foo
; CHECK: mfspr r{{[0-9]+}}, 256
; CHECK: mtspr 256, r{{[0-9]+}}
return: ; preds = %entry
ret <4 x float> %d
}