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| author | Cliff Click <cliffc@acm.org> | 2025-03-15 12:55:57 -0700 |
|---|---|---|
| committer | Cliff Click <cliffc@acm.org> | 2025-03-15 12:55:57 -0700 |
| commit | fe27a3326becaf1a59286fa03d9aaa22504ec4ee (patch) | |
| tree | 1b4d24125db9a4554335ff911e8c100c89f11965 /chapter21/src | |
| parent | b6cbd3d7b7698922e60e2c3eadadab51a430efe1 (diff) | |
| download | Simple-fe27a3326becaf1a59286fa03d9aaa22504ec4ee.tar.gz Simple-fe27a3326becaf1a59286fa03d9aaa22504ec4ee.zip | |
Tests all pass
Diffstat (limited to 'chapter21/src')
| -rw-r--r-- | chapter21/src/main/java/com/seaofnodes/simple/codegen/IFG.java | 9 | ||||
| -rw-r--r-- | chapter21/src/test/java/com/seaofnodes/simple/BrainFuckTest.java | 2 |
2 files changed, 9 insertions, 2 deletions
diff --git a/chapter21/src/main/java/com/seaofnodes/simple/codegen/IFG.java b/chapter21/src/main/java/com/seaofnodes/simple/codegen/IFG.java index bd6c2d56..729ec88e 100644 --- a/chapter21/src/main/java/com/seaofnodes/simple/codegen/IFG.java +++ b/chapter21/src/main/java/com/seaofnodes/simple/codegen/IFG.java @@ -207,8 +207,15 @@ abstract public class IFG { // Disallow clone-ables from killing registers. Just fail // them and re-clone closer to target... so no kill. // Special case for Intel XOR used to zero. - if( m.isClone() ) + Node n = (Node)m; + CFGNode effUseBlk = n.out(0) instanceof PhiNode phi ? phi.region().cfg(phi._inputs.find(n)) : n.out(0).cfg0(); + if( m.isClone() && // Must be clonable + (n.nOuts()>1 || // Has many users OR + // Only 1 user but effective use is remote block + effUseBlk != n.cfg0() )) + // Then fail the clonable; it should split or move alloc.fail(alloc.lrg((Node)m)); + // Else clonable cannot move else if( !tlrg.sub(killMask) ) alloc.fail(tlrg); } diff --git a/chapter21/src/test/java/com/seaofnodes/simple/BrainFuckTest.java b/chapter21/src/test/java/com/seaofnodes/simple/BrainFuckTest.java index c23bb301..dd1f2372 100644 --- a/chapter21/src/test/java/com/seaofnodes/simple/BrainFuckTest.java +++ b/chapter21/src/test/java/com/seaofnodes/simple/BrainFuckTest.java @@ -64,7 +64,7 @@ for( int pc = 0; pc < program#; pc++ ) { return output; """; Chapter20Test.testCPU(src,"x86_64_v2", "SystemV",28,null); - Chapter20Test.testCPU(src,"riscv" , "SystemV",18,null); + Chapter20Test.testCPU(src,"riscv" , "SystemV",14,null); Chapter20Test.testCPU(src,"arm" , "SystemV",12,null); //assertEquals("Hello World!\n", Eval2.eval(code, 0, 10000)); } |