-
Notifications
You must be signed in to change notification settings - Fork 696
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
main/llvm16: backport patch to fix rust build error on loongarch64
- Loading branch information
1 parent
0611bdb
commit 1428118
Showing
2 changed files
with
86 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
84 changes: 84 additions & 0 deletions
84
main/llvm16/LoongArch-Assume-no-op-addrspacecasts-by-default.patch
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| From 525b1a631e3d858df1cf5e9e64dace666dc851bb Mon Sep 17 00:00:00 2001 | ||
| From: WANG Rui <wangrui@loongson.cn> | ||
| Date: Tue, 20 Feb 2024 17:41:36 +0800 | ||
| Subject: [PATCH] [LoongArch] Assume no-op addrspacecasts by default | ||
|
|
||
| Fixes #82330 | ||
| --- | ||
| .../Target/LoongArch/LoongArchTargetMachine.h | 5 ++ | ||
| llvm/test/CodeGen/LoongArch/addrspacecast.ll | 47 +++++++++++++++++++ | ||
| 2 files changed, 52 insertions(+) | ||
| create mode 100644 llvm/test/CodeGen/LoongArch/addrspacecast.ll | ||
|
|
||
| diff --git a/llvm/lib/Target/LoongArch/LoongArchTargetMachine.h b/llvm/lib/Target/LoongArch/LoongArchTargetMachine.h | ||
| index 7d39d47e86b3..fa9bc7608e7d 100644 | ||
| --- a/llvm/lib/Target/LoongArch/LoongArchTargetMachine.h | ||
| +++ b/llvm/lib/Target/LoongArch/LoongArchTargetMachine.h | ||
| @@ -45,6 +45,11 @@ public: | ||
| MachineFunctionInfo * | ||
| createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F, | ||
| const TargetSubtargetInfo *STI) const override; | ||
| + | ||
| + // Addrspacecasts are always noops. | ||
| + bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override { | ||
| + return true; | ||
| + } | ||
| }; | ||
|
|
||
| } // end namespace llvm | ||
| diff --git a/llvm/test/CodeGen/LoongArch/addrspacecast.ll b/llvm/test/CodeGen/LoongArch/addrspacecast.ll | ||
| new file mode 100644 | ||
| index 000000000000..2b90f32d0297 | ||
| --- /dev/null | ||
| +++ b/llvm/test/CodeGen/LoongArch/addrspacecast.ll | ||
| @@ -0,0 +1,47 @@ | ||
| +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | ||
| +; RUN: llc -mtriple=loongarch32 -verify-machineinstrs < %s | FileCheck %s --check-prefix=LA32 | ||
| +; RUN: llc -mtriple=loongarch64 -verify-machineinstrs < %s | FileCheck %s --check-prefix=LA64 | ||
| + | ||
| +define void @cast0(ptr addrspace(1) %ptr) { | ||
| +; LA32-LABEL: cast0: | ||
| +; LA32: # %bb.0: | ||
| +; LA32-NEXT: st.w $zero, $a0, 0 | ||
| +; LA32-NEXT: ret | ||
| +; | ||
| +; LA64-LABEL: cast0: | ||
| +; LA64: # %bb.0: | ||
| +; LA64-NEXT: st.w $zero, $a0, 0 | ||
| +; LA64-NEXT: ret | ||
| + %ptr0 = addrspacecast ptr addrspace(1) %ptr to ptr addrspace(0) | ||
| + store i32 0, ptr %ptr0 | ||
| + ret void | ||
| +} | ||
| + | ||
| +define void @cast1(ptr %ptr) { | ||
| +; LA32-LABEL: cast1: | ||
| +; LA32: # %bb.0: | ||
| +; LA32-NEXT: addi.w $sp, $sp, -16 | ||
| +; LA32-NEXT: .cfi_def_cfa_offset 16 | ||
| +; LA32-NEXT: st.w $ra, $sp, 12 # 4-byte Folded Spill | ||
| +; LA32-NEXT: .cfi_offset 1, -4 | ||
| +; LA32-NEXT: bl %plt(foo) | ||
| +; LA32-NEXT: ld.w $ra, $sp, 12 # 4-byte Folded Reload | ||
| +; LA32-NEXT: addi.w $sp, $sp, 16 | ||
| +; LA32-NEXT: ret | ||
| +; | ||
| +; LA64-LABEL: cast1: | ||
| +; LA64: # %bb.0: | ||
| +; LA64-NEXT: addi.d $sp, $sp, -16 | ||
| +; LA64-NEXT: .cfi_def_cfa_offset 16 | ||
| +; LA64-NEXT: st.d $ra, $sp, 8 # 8-byte Folded Spill | ||
| +; LA64-NEXT: .cfi_offset 1, -8 | ||
| +; LA64-NEXT: bl %plt(foo) | ||
| +; LA64-NEXT: ld.d $ra, $sp, 8 # 8-byte Folded Reload | ||
| +; LA64-NEXT: addi.d $sp, $sp, 16 | ||
| +; LA64-NEXT: ret | ||
| + %castptr = addrspacecast ptr %ptr to ptr addrspace(10) | ||
| + call void @foo(ptr addrspace(10) %castptr) | ||
| + ret void | ||
| +} | ||
| + | ||
| +declare void @foo(ptr addrspace(10)) | ||
| -- | ||
| 2.27.0 | ||
|
|