| 文件 | 最后提交记录 | 最后更新时间 |
|---|---|---|
[MLIR] Add f8E4M3 IEEE 754 type (#97118) This PR adds f8E4M3 type to mlir. f8E4M3 type follows IEEE 754 convention c f8E4M3 (IEEE 754) - Exponent bias: 7 - Maximum stored exponent value: 14 (binary 1110) - Maximum unbiased exponent value: 14 - 7 = 7 - Minimum stored exponent value: 1 (binary 0001) - Minimum unbiased exponent value: 1 − 7 = −6 - Precision specifies the total number of bits used for the significand (mantisa), including implicit leading integer bit = 3 + 1 = 4 - Follows IEEE 754 conventions for representation of special values - Has Positive and Negative zero - Has Positive and Negative infinity - Has NaNs Additional details: - Max exp (unbiased): 7 - Min exp (unbiased): -6 - Infinities (+/-): S.1111.000 - Zeros (+/-): S.0000.000 - NaNs: S.1111.{001, 010, 011, 100, 101, 110, 111} - Max normal number: S.1110.111 = +/-2^(7) x (1 + 0.875) = +/-240 - Min normal number: S.0001.000 = +/-2^(-6) - Max subnormal number: S.0000.111 = +/-2^(-6) x 0.875 = +/-2^(-9) x 7 - Min subnormal number: S.0000.001 = +/-2^(-6) x 0.125 = +/-2^(-9) Related PRs: - [PR-97179](https://github.com/llvm/llvm-project/pull/97179) [APFloat] Add support for f8E4M3 IEEE 754 type | 2 年前 | |
[MLIR][LLVM] Always print variadic callee type (#99293) This commit updates the LLVM dialect CallOp and InvokeOp to always print the variadic callee type (previously callee type) if present. An additional verifier checks that only variadic calls have a non-null variadic callee type, and the builders are adapted accordingly to set the variadic callee type for variadic calls only. Finally, the CallOp and InvokeOp verifiers are strengthened to check that the variadic callee type matches the call argument and result types. The motivation of this change is that CallOp and InvokeOp don't have hidden state that is not pretty printed, but used during the export to LLVM IR. Previously, it could happen that a call looked correct in MLIR, but the return type changed after exporting to LLVM IR (since it has been taken from the hidden callee type attribute). After landing this change, this is not possible anymore since the variadic callee type is always printed if present. | 2 年前 |