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Allow (zext (truncate)) to apply after legalize if the target supports AND (which all do). This compiles short %foo() { %tmp.0 = load ubyte* %X ; <ubyte> [#uses=1] %tmp.3 = cast ubyte %tmp.0 to short ; <short> [#uses=1] ret short %tmp.3 } to: _foo: movzbl _X, %eax ret instead of: _foo: movzbl _X, %eax movzbl %al, %eax ret thanks to Evan for pointing this out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24709 91177308-0d34-0410-b5e6-96231b3b80d8 |
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