diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/CodeGenerator.html | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/docs/CodeGenerator.html b/docs/CodeGenerator.html index 1d03cbdf1a..aba7b1bcf5 100644 --- a/docs/CodeGenerator.html +++ b/docs/CodeGenerator.html @@ -1889,7 +1889,8 @@ $ llc -regalloc=pbqp file.bc -o pbqp.s; </dd> - <dt><i>Frameless with a Small Constant Stack Size (EBP or RBP is not used as a frame pointer)</i></dt> + <dt><i>Frameless with a Small Constant Stack Size (<code>EBP</code> + or <code>RBP</code> is not used as a frame pointer)</i></dt> <dd><p>To return, a constant (encoded in the compact unwind encoding) is added to the <code>ESP/RSP</code>. Then the return is done by popping the stack into the PC. All non-volatile registers that need to be restored must have @@ -1903,12 +1904,13 @@ $ llc -regalloc=pbqp file.bc -o pbqp.s; function in <code>lib/Target/X86FrameLowering.cpp</code> for the encoding algorithm.)</p></dd> - <dt><i>Frameless with a Large Constant Stack Size (EBP or RBP is not used as a frame pointer)</i></dt> + <dt><i>Frameless with a Large Constant Stack Size (<code>EBP</code> + or <code>RBP</code> is not used as a frame pointer)</i></dt> <dd><p>This case is like the "Frameless with a Small Constant Stack Size" - case, but the stack size is too larget to encode in the compact unwind + case, but the stack size is too large to encode in the compact unwind encoding. Instead it requires that the function contains "<code>subl $nnnnnn, %esp</code>" in its prolog. The compact encoding contains the - offset to the <code>$nnnnnn</code> value in the funciton in bits 9-12 + offset to the <code>$nnnnnn</code> value in the function in bits 9-12 (mask: <code>0x00001C00</code>).</p></dd> </ul> |