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Diffstat (limited to 'llvm/docs/GlobalISel/GenericOpcode.rst')
| -rw-r--r-- | llvm/docs/GlobalISel/GenericOpcode.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/docs/GlobalISel/GenericOpcode.rst b/llvm/docs/GlobalISel/GenericOpcode.rst index eefd76de9c33..b05532746673 100644 --- a/llvm/docs/GlobalISel/GenericOpcode.rst +++ b/llvm/docs/GlobalISel/GenericOpcode.rst @@ -1150,6 +1150,15 @@ An alignment value of `0` or `1` means no specific alignment. %8:_(p0) = G_DYN_STACKALLOC %7(s64), 32 +G_FREEZE +^^^^^^^^ + +G_FREEZE is used to stop propagation of undef and poison values. + +.. code-block:: none + + %1:_(s32) = G_FREEZE %0(s32) + Optimization Hints ------------------ |