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ARM: use NOEN loads and stores if possible when handling struct byval.

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This change is to be enabled in clang.

rdar://9877866


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158684 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Manman Ren
2012-06-18 22:23:48 +00:00
parent e877c4f9c7
commit eda9fdf979
2 changed files with 56 additions and 8 deletions
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14
test/CodeGen/ARM/struct_byval.ll
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@@ -28,5 +28,19 @@ entry:
ret i32 0
}
; Generate a loop using NEON instructions
define i32 @h() nounwind ssp {
entry:
; CHECK: h:
; CHECK: vld1
; CHECK: sub
; CHECK: vst1
; CHECK: bne
%st = alloca %struct.LargeStruct, align 16
%call = call i32 @e3(%struct.LargeStruct* byval align 16 %st)
ret i32 0
}
declare i32 @e1(%struct.SmallStruct* nocapture byval %in) nounwind
declare i32 @e2(%struct.LargeStruct* nocapture byval %in) nounwind
declare i32 @e3(%struct.LargeStruct* nocapture byval align 16 %in) nounwind