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| author | Cliff Click <cliffc@acm.org> | 2024-09-13 09:40:38 -0700 |
|---|---|---|
| committer | XmiliaH <45106915+XmiliaH@users.noreply.github.com> | 2024-09-13 18:46:01 +0200 |
| commit | 4be43794169610d45e47468702c63cdfbc5deb5a (patch) | |
| tree | cce5414e14ceab8d4e4927bdf553f1e4528429a1 /chapter08/src | |
| parent | 703f88dbb2e1e4352a0725b7e742151739b82ea1 (diff) | |
| download | Simple-4be43794169610d45e47468702c63cdfbc5deb5a.tar.gz Simple-4be43794169610d45e47468702c63cdfbc5deb5a.zip | |
move x-x check up front
Diffstat (limited to 'chapter08/src')
| -rw-r--r-- | chapter08/src/main/java/com/seaofnodes/simple/node/SubNode.java | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/chapter08/src/main/java/com/seaofnodes/simple/node/SubNode.java b/chapter08/src/main/java/com/seaofnodes/simple/node/SubNode.java index 98aa679f..af66b950 100644 --- a/chapter08/src/main/java/com/seaofnodes/simple/node/SubNode.java +++ b/chapter08/src/main/java/com/seaofnodes/simple/node/SubNode.java @@ -21,15 +21,16 @@ public class SubNode extends Node { @Override public Type compute() { + // Sub of same is 0 + if( in(1)==in(2) ) + return TypeInteger.ZERO; + if (in(1)._type instanceof TypeInteger i0 && in(2)._type instanceof TypeInteger i1) { if (i0.isConstant() && i1.isConstant()) return TypeInteger.constant(i0.value()-i1.value()); return i0.meet(i1); } - // Sub of same is 0 - if( in(1)==in(2) ) - return TypeInteger.ZERO; return Type.BOTTOM; } |