Bug Fix RegAlloc

RA, self-conflict around backedge of loop predates loop, must still split.  Eager splitting here leads to bad allocations, but never splitting is broken.
Move building adj lists into IFG from Coalesce.
testNewtonFloat not so fragile.
Hack around bug SetArm

2 files changed, 2 insertions, 2 deletions

diff --git a/chapter21/src/test/java/com/seaofnodes/simple/Chapter20Test.java b/chapter21/src/test/java/com/seaofnodes/simple/Chapter20Test.java
index b83db0d1..81000f9e 100644
--- a/chapter21/src/test/java/com/seaofnodes/simple/Chapter20Test.java
+++ b/chapter21/src/test/java/com/seaofnodes/simple/Chapter20Test.java
@@ -75,7 +75,7 @@ return sqrt(arg) + sqrt(arg+2);
     public void testNewtonFloat() throws IOException {
         String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/newtonFloat.smp"))
             + "flt farg = arg; return sqrt(farg) + sqrt(farg+2.0);";
-        testCPU(src,"x86_64_v2", "SystemV",25,null);
+        testCPU(src,"x86_64_v2", "SystemV",39,null);
         testCPU(src,"riscv"    , "SystemV",17,null);
         testCPU(src,"arm"      , "SystemV",18,null);
     }
diff --git a/chapter21/src/test/java/com/seaofnodes/simple/Chapter21Test.java b/chapter21/src/test/java/com/seaofnodes/simple/Chapter21Test.java
index 617284ca..e726ada3 100644
--- a/chapter21/src/test/java/com/seaofnodes/simple/Chapter21Test.java
+++ b/chapter21/src/test/java/com/seaofnodes/simple/Chapter21Test.java
@@ -48,7 +48,7 @@ public class Chapter21Test {
     public void testNewtonFloat() throws IOException {
         String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/newtonFloat.smp"))
             + "flt farg = arg; return sqrt(farg) + sqrt(farg+2.0);";
-        testCPU(src,"x86_64_v2", "SystemV",23,null);
+        testCPU(src,"x86_64_v2", "SystemV",39,null);
         testCPU(src,"riscv"    , "SystemV",18,null);
         testCPU(src,"arm"      , "SystemV",19,null);
     }