llvm-project

Author SHA1 Message Date

Author	SHA1	Message	Date
Anna Thomas	58a05675da	Revert "[InlineFunction] Handle return attributes on call within inlined body" This reverts commit `28518d9ae3`. There is a failure in MsgPackReader.cpp when built with clang. It complains about "signext and zeroext" are incompatible. Investigating offline if it is infact a UB in the MsgPackReader code.	2020-03-31 16:16:34 -04:00
Anna Thomas	28518d9ae3	[InlineFunction] Handle return attributes on call within inlined body Consider a callee function that has a call (C) within it which feeds into the return. When we inline that callee into a callsite that has return attributes, we can backward propagate those attributes to the call (C) within that inlined callee body. This is safe to do so only if we can guarantee transfer of execution to successor in the window of instructions between return value (i.e. the call C) and the return instruction. See added test cases. Reviewed-By: reames, jdoerfert Differential Revision: https://reviews.llvm.org/D76140	2020-03-31 14:35:40 -04:00
Craig Topper	6ad9220067	[X86] Add the movbe instruction intrinsics from icc. These intrinsics exist in icc. They can be found on the Intel Intrinsics Guide website. All the backend support is in place to pattern match a load+bswap or a bswap+store pattern to the MOVBE instructions. So we just need to get the frontend to emit the correct IR. The pointer arguments in icc are declared as void so I had to jump through a packed struct to forcing a specific alignment on the load/store. Same trick we use in the unaligned vector load/store intrinsics Differential Revision: https://reviews.llvm.org/D52586 llvm-svn: 343343	2018-09-28 17:09:51 +00:00

Anna Thomas

58a05675da

Revert "[InlineFunction] Handle return attributes on call within inlined body"

This reverts commit 28518d9ae3.
There is a failure in MsgPackReader.cpp when built with clang. It
complains about "signext and zeroext" are incompatible. Investigating
offline if it is infact a UB in the MsgPackReader code.

2020-03-31 16:16:34 -04:00

Anna Thomas

28518d9ae3

[InlineFunction] Handle return attributes on call within inlined body

Consider a callee function that has a call (C) within it which feeds
into the return.  When we inline that callee into a callsite that has
return attributes, we can backward propagate those attributes to the
call (C) within that inlined callee body.

This is safe to do so only if we can guarantee transfer of execution to
successor in the window of instructions between return value (i.e. the
call C) and the return instruction.

See added test cases.

Reviewed-By: reames, jdoerfert

Differential Revision: https://reviews.llvm.org/D76140

2020-03-31 14:35:40 -04:00

Craig Topper

6ad9220067

[X86] Add the movbe instruction intrinsics from icc.

These intrinsics exist in icc. They can be found on the Intel Intrinsics Guide website.

All the backend support is in place to pattern match a load+bswap or a bswap+store pattern to the MOVBE instructions. So we just need to get the frontend to emit the correct IR. The pointer arguments in icc are declared as void so I had to jump through a packed struct to forcing a specific alignment on the load/store. Same trick we use in the unaligned vector load/store intrinsics

Differential Revision: https://reviews.llvm.org/D52586

llvm-svn: 343343

2018-09-28 17:09:51 +00:00

3 Commits