mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-28 07:05:03 +00:00
aad2a72c28
Support for dynamic stack alignments in the PPC backend has been unfinished, in part because it depends on dynamic stack realignment (which I only just recently implemented fully). Now we can also support dynamic allocas with higher than the default target stack alignment (16 bytes). In order to round-up the requested size to the maximum requested alignment, we need an additional register to hold the rounded-up size. We're already using one scavenged register to hold the previous stack-pointer value (which needs to be stored with the signal-safe stdux update), and so when we have dynamic allocas and a large alignment, we allocate two emergency spill slots for the scavenger. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186562 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
1.3 KiB
LLVM
40 lines
1.3 KiB
LLVM
; RUN: llc -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 < %s | 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-unknown-linux-gnu"
|
|
|
|
%struct.s = type { i32, i32 }
|
|
|
|
declare void @bar(i32*, i32*) #0
|
|
|
|
define void @goo(%struct.s* byval nocapture readonly %a, i32 signext %n) #0 {
|
|
entry:
|
|
%0 = zext i32 %n to i64
|
|
%vla = alloca i32, i64 %0, align 128
|
|
%vla1 = alloca i32, i64 %0, align 128
|
|
%a2 = getelementptr inbounds %struct.s* %a, i64 0, i32 0
|
|
%1 = load i32* %a2, align 4, !tbaa !0
|
|
store i32 %1, i32* %vla1, align 128, !tbaa !0
|
|
%b = getelementptr inbounds %struct.s* %a, i64 0, i32 1
|
|
%2 = load i32* %b, align 4, !tbaa !0
|
|
%arrayidx3 = getelementptr inbounds i32* %vla1, i64 1
|
|
store i32 %2, i32* %arrayidx3, align 4, !tbaa !0
|
|
call void @bar(i32* %vla1, i32* %vla) #0
|
|
ret void
|
|
|
|
; CHECK-LABEL: @goo
|
|
|
|
; CHECK-DAG: li [[REG1:[0-9]+]], -128
|
|
; CHECK-DAG: neg [[REG2:[0-9]+]],
|
|
; CHECK: and [[REG1]], [[REG2]], [[REG1]]
|
|
; CHECK: stdux {{[0-9]+}}, 1, [[REG1]]
|
|
|
|
; CHECK: blr
|
|
|
|
}
|
|
|
|
attributes #0 = { nounwind }
|
|
|
|
!0 = metadata !{metadata !"int", metadata !1}
|
|
!1 = metadata !{metadata !"omnipotent char", metadata !2}
|
|
!2 = metadata !{metadata !"Simple C/C++ TBAA"}
|