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Cherry-pick a patch from 7 to fix an issue with Julia on powerpc - PowerPC-Make-AddrSpaceCast-noop.diff (Closes: #906314)

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Sylvestre Ledru 2018-08-17 08:49:56 +02:00
parent 06db0d2490
commit 1f2dd632ff
3 changed files with 52 additions and 0 deletions
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8
debian/changelog vendored
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@ -1,3 +1,11 @@
llvm-toolchain-6.0 (1:6.0.1-5) unstable; urgency=medium
* Cherry-pick a patch from 7 to fix an issue with Julia
on powerpc - PowerPC-Make-AddrSpaceCast-noop.diff
(Closes: #906314)
-- Sylvestre Ledru <sylvestre@debian.org> Fri, 17 Aug 2018 08:49:22 +0200
llvm-toolchain-6.0 (1:6.0.1-4) unstable; urgency=medium
* Disable force-gcc-header-obj.diff as it is introducing

43
debian/patches/PowerPC-Make-AddrSpaceCast-noop.diff vendored Normal file
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@ -0,0 +1,43 @@
Index: llvm-toolchain-6.0-6.0.1/CodeGen/PowerPC/addrspacecast.ll
===================================================================
--- /dev/null
+++ llvm-toolchain-6.0-6.0.1/CodeGen/PowerPC/addrspacecast.ll
@@ -0,0 +1,22 @@
+; RUN: llc -mtriple=powerpc64le-unknown-linux-gnu %s -o - | FileCheck %s
+
+; Check that codegen for an addrspace cast succeeds without error.
+define <4 x i32 addrspace(1)*> @f (<4 x i32*> %x) {
+ %1 = addrspacecast <4 x i32*> %x to <4 x i32 addrspace(1)*>
+ ret <4 x i32 addrspace(1)*> %1
+ ; CHECK-LABEL: @f
+}
+
+; Check that fairly complicated addrspace cast and operations succeed without error.
+%struct = type opaque
+define void @g (%struct addrspace(10)** %x) {
+ %1 = load %struct addrspace(10)*, %struct addrspace(10)** %x
+ %2 = addrspacecast %struct addrspace(10)* %1 to %struct addrspace(11)*
+ %3 = bitcast %struct addrspace(11)* %2 to i8 addrspace(11)*
+ %4 = getelementptr i8, i8 addrspace(11)* %3, i64 16
+ %5 = bitcast i8 addrspace(11)* %4 to %struct addrspace(10)* addrspace(11)*
+ %6 = load %struct addrspace(10)*, %struct addrspace(10)* addrspace(11)* %5
+ store %struct addrspace(10)* %6, %struct addrspace(10)** undef
+ ret void
+ ; CHECK-LABEL: @g
+}
Index: llvm-toolchain-6.0-6.0.1/lib/Target/PowerPC/PPCISelLowering.h
===================================================================
--- llvm-toolchain-6.0-6.0.1.orig/lib/Target/PowerPC/PPCISelLowering.h
+++ llvm-toolchain-6.0-6.0.1/lib/Target/PowerPC/PPCISelLowering.h
@@ -884,6 +884,11 @@ namespace llvm {
}
};
+ bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
+ // Addrspacecasts are always noops.
+ return true;
+ }
+
bool canReuseLoadAddress(SDValue Op, EVT MemVT, ReuseLoadInfo &RLI,
SelectionDAG &DAG,
ISD::LoadExtType ET = ISD::NON_EXTLOAD) const;

1
debian/patches/series vendored
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@ -59,3 +59,4 @@ D40146-JumpThreading-backport-1.diff
D42717-JumpThreading-backport-2.diff
llvm-D49832-SCEVPred.patch
llvm-rL323946-LSRTy.patch
PowerPC-Make-AddrSpaceCast-noop.diff