[CIR][CodeGen] Fix address space of result pointer type of array decay cast op #812
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Maybe we should check |
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Indeed! I'm mistaken. Let me include it in this PR. |
bcardosolopes
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Sep 10, 2024
…on (#813) Currently some bitcasts would silently change the address space of source pointer type, which hides some miscompilations of pointer type in CIR. #812 is an example. The address space in result pointer type is dropped, but the bitcast later keep the type consistency no matter what the result type is. Such bitcast is commonly emitted in CodeGen. CIR bitcasts are lowered to LLVM bitcasts, which also don't allow mismatch between address spaces. This PR adds this verification.
Hugobros3
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Oct 2, 2024
…y cast op (llvm#812) There are two occurrences of `cir.cast(array_to_ptrdecay, ...)` that drop address spaces unexpectedly for its result pointer type. This PR fixes them with the source address space. ```mlir // Before %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i> // After %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i, addrspace(offload_local)> ```
Hugobros3
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Oct 2, 2024
…on (llvm#813) Currently some bitcasts would silently change the address space of source pointer type, which hides some miscompilations of pointer type in CIR. llvm#812 is an example. The address space in result pointer type is dropped, but the bitcast later keep the type consistency no matter what the result type is. Such bitcast is commonly emitted in CodeGen. CIR bitcasts are lowered to LLVM bitcasts, which also don't allow mismatch between address spaces. This PR adds this verification.
smeenai
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Oct 9, 2024
…y cast op (llvm#812) There are two occurrences of `cir.cast(array_to_ptrdecay, ...)` that drop address spaces unexpectedly for its result pointer type. This PR fixes them with the source address space. ```mlir // Before %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i> // After %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i, addrspace(offload_local)> ```
smeenai
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to smeenai/clangir
that referenced
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Oct 9, 2024
…on (llvm#813) Currently some bitcasts would silently change the address space of source pointer type, which hides some miscompilations of pointer type in CIR. llvm#812 is an example. The address space in result pointer type is dropped, but the bitcast later keep the type consistency no matter what the result type is. Such bitcast is commonly emitted in CodeGen. CIR bitcasts are lowered to LLVM bitcasts, which also don't allow mismatch between address spaces. This PR adds this verification.
smeenai
pushed a commit
to smeenai/clangir
that referenced
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Oct 9, 2024
…y cast op (llvm#812) There are two occurrences of `cir.cast(array_to_ptrdecay, ...)` that drop address spaces unexpectedly for its result pointer type. This PR fixes them with the source address space. ```mlir // Before %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i> // After %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i, addrspace(offload_local)> ```
smeenai
pushed a commit
to smeenai/clangir
that referenced
this pull request
Oct 9, 2024
…on (llvm#813) Currently some bitcasts would silently change the address space of source pointer type, which hides some miscompilations of pointer type in CIR. llvm#812 is an example. The address space in result pointer type is dropped, but the bitcast later keep the type consistency no matter what the result type is. Such bitcast is commonly emitted in CodeGen. CIR bitcasts are lowered to LLVM bitcasts, which also don't allow mismatch between address spaces. This PR adds this verification.
keryell
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Oct 19, 2024
…y cast op (llvm#812) There are two occurrences of `cir.cast(array_to_ptrdecay, ...)` that drop address spaces unexpectedly for its result pointer type. This PR fixes them with the source address space. ```mlir // Before %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i> // After %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i, addrspace(offload_local)> ```
keryell
pushed a commit
to keryell/clangir
that referenced
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Oct 19, 2024
…on (llvm#813) Currently some bitcasts would silently change the address space of source pointer type, which hides some miscompilations of pointer type in CIR. llvm#812 is an example. The address space in result pointer type is dropped, but the bitcast later keep the type consistency no matter what the result type is. Such bitcast is commonly emitted in CodeGen. CIR bitcasts are lowered to LLVM bitcasts, which also don't allow mismatch between address spaces. This PR adds this verification.
lanza
pushed a commit
that referenced
this pull request
Nov 5, 2024
…y cast op (#812) There are two occurrences of `cir.cast(array_to_ptrdecay, ...)` that drop address spaces unexpectedly for its result pointer type. This PR fixes them with the source address space. ```mlir // Before %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i> // After %1 = cir.cast(array_to_ptrdecay, %0 : !cir.ptr<!cir.array<!s32i x 32>, addrspace(offload_local)>), !cir.ptr<!s32i, addrspace(offload_local)> ```
lanza
pushed a commit
that referenced
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Nov 5, 2024
…on (#813) Currently some bitcasts would silently change the address space of source pointer type, which hides some miscompilations of pointer type in CIR. #812 is an example. The address space in result pointer type is dropped, but the bitcast later keep the type consistency no matter what the result type is. Such bitcast is commonly emitted in CodeGen. CIR bitcasts are lowered to LLVM bitcasts, which also don't allow mismatch between address spaces. This PR adds this verification.
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There are two occurrences of
cir.cast(array_to_ptrdecay, ...)that drop address spaces unexpectedly for its result pointer type. This PR fixes them with the source address space.