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| author | David Green <david.green@arm.com> | 2021-06-08 10:18:58 +0100 |
|---|---|---|
| committer | David Green <david.green@arm.com> | 2021-06-08 10:18:58 +0100 |
| commit | b889c6ee9911b72a58986d528f42dd18cbdf92d7 (patch) | |
| tree | 1521bcd561d39b671b954748dfe1eebe47e123d3 /llvm/lib/CodeGen/CommandFlags.cpp | |
| parent | b34da6ff9c1d72816d0c9b87d5f0e879850bc424 (diff) | |
| download | llvm-b889c6ee9911b72a58986d528f42dd18cbdf92d7.zip llvm-b889c6ee9911b72a58986d528f42dd18cbdf92d7.tar.gz llvm-b889c6ee9911b72a58986d528f42dd18cbdf92d7.tar.bz2 | |
[DAG] Allow isNullOrNullSplat to see truncated zeroes
This sets the AllowTruncation flag on isConstOrConstSplat in
isNullOrNullSplat, allowing it to see truncated constant zeroes on
architectures such as AArch64, where only a i32.i64 are legal. As a
truncation of 0 is always 0, this should always be valid, allowing some
extra folding to happen including some of the cases from D103755.
Differential Revision: https://reviews.llvm.org/D103756
Diffstat (limited to 'llvm/lib/CodeGen/CommandFlags.cpp')
0 files changed, 0 insertions, 0 deletions