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[LangRef] fix formatting in FP descriptions; NFC 

This is a clean-up step to reduce diffs ahead of real
changes to the FP semantics as discussed on llvm-dev:
http://lists.llvm.org/pipermail/llvm-dev/2018-February/121444.html

llvm-svn: 326913
This commit is contained in:
Sanjay Patel 2018-03-07 17:18:22 +00:00
parent e1847da924
commit 7b7224051c
1 changed files with 22 additions and 21 deletions
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43
llvm/docs/LangRef.rst
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@ -3064,11 +3064,11 @@ optimizer can assume that it occurs in dead code.
a: <deleted>
b: unreachable
These examples reiterate the ``fdiv`` example: a store *of* an undefined
value can be assumed to not have any effect; we can assume that the
value is overwritten with bits that happen to match what was already
there. However, a store *to* an undefined location could clobber
arbitrary memory, therefore, it has undefined behavior.
A store *of* an undefined value can be assumed to not have any effect;
we can assume that the value is overwritten with bits that happen to
match what was already there. However, a store *to* an undefined
location could clobber arbitrary memory, therefore, it has undefined
behavior.
.. _poisonvalues:
@ -6403,10 +6403,10 @@ Both arguments must have identical types.
Semantics:
""""""""""
The value produced is the floating point sum of the two operands. This
instruction can also take any number of :ref:`fast-math flags <fastmath>`,
which are optimization hints to enable otherwise unsafe floating point
optimizations:
The value produced is the floating-point sum of the two operands.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating-point optimizations:
Example:
""""""""
@ -6498,10 +6498,10 @@ Both arguments must have identical types.
Semantics:
""""""""""
The value produced is the floating point difference of the two operands.
The value produced is the floating-point difference of the two operands.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating point optimizations:
unsafe floating-point optimizations:
Example:
""""""""
@ -6591,10 +6591,10 @@ Both arguments must have identical types.
Semantics:
""""""""""
The value produced is the floating point product of the two operands.
The value produced is the floating-point product of the two operands.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating point optimizations:
unsafe floating-point optimizations:
Example:
""""""""
@ -6723,10 +6723,10 @@ Both arguments must have identical types.
Semantics:
""""""""""
The value produced is the floating point quotient of the two operands.
The value produced is the floating-point quotient of the two operands.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating point optimizations:
unsafe floating-point optimizations:
Example:
""""""""
@ -6864,12 +6864,13 @@ Both arguments must have identical types.
Semantics:
""""""""""
Return the same value as a libm '``fmod``' function but without trapping or
setting ``errno``.
The remainder has the same sign as the dividend. This instruction can also
take any number of :ref:`fast-math flags <fastmath>`, which are optimization
hints to enable otherwise unsafe floating-point optimizations:
The value produced is the floating-point remainder of the two operands.
This is the same output as a libm '``fmod``' function, but without any
possibility of setting ``errno``. The remainder has the same sign as the
dividend.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating-point optimizations:
Example:
""""""""