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-rw-r--r--test/analysis/data_flow.py339
1 files changed, 178 insertions, 161 deletions
diff --git a/test/analysis/data_flow.py b/test/analysis/data_flow.py
index 8204d9ce..d0dbbd8d 100644
--- a/test/analysis/data_flow.py
+++ b/test/analysis/data_flow.py
@@ -77,108 +77,113 @@ class IRATest(ira):
     def get_out_regs(self, _):
         return set([self.ret_reg, self.sp])
 
+IRA = IRATest(loc_db)
+
 # graph 1 : Simple graph with dead and alive variables
 
-G1_IRA = IRATest(loc_db)
+G1_IRA = IRA.new_ircfg()
 
 G1_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)], [ExprAff(b, CST2)]])
 G1_IRB1 = gen_irblock(LBL1, [[ExprAff(a, b)]])
 G1_IRB2 = gen_irblock(LBL2, [[ExprAff(r, a)]])
 
-G1_IRA.blocks = {irb.loc_key : irb for irb in [G1_IRB0, G1_IRB1, G1_IRB2]}
+for irb in [G1_IRB0, G1_IRB1, G1_IRB2]:
+    G1_IRA.add_irblock(irb)
 
-G1_IRA.graph.add_uniq_edge(G1_IRB0.loc_key, G1_IRB1.loc_key)
-G1_IRA.graph.add_uniq_edge(G1_IRB1.loc_key, G1_IRB2.loc_key)
+G1_IRA.add_uniq_edge(G1_IRB0.loc_key, G1_IRB1.loc_key)
+G1_IRA.add_uniq_edge(G1_IRB1.loc_key, G1_IRB2.loc_key)
 
 # Expected output for graph 1
-G1_EXP_IRA = IRATest(loc_db)
+G1_EXP_IRA = IRA.new_ircfg()
 
 G1_EXP_IRB0 = gen_irblock(LBL0, [[], [ExprAff(b, CST2)]])
 G1_EXP_IRB1 = gen_irblock(LBL1, [[ExprAff(a, b)]])
 G1_EXP_IRB2 = gen_irblock(LBL2, [[ExprAff(r, a)]])
 
-G1_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G1_EXP_IRB0, G1_EXP_IRB1,
-                                                 G1_EXP_IRB2]}
+for irb in [G1_EXP_IRB0, G1_EXP_IRB1, G1_EXP_IRB2]:
+    G1_EXP_IRA.add_irblock(irb)
 
 # graph 2 : Natural loop with dead variable
 
-G2_IRA = IRATest(loc_db)
+G2_IRA = IRA.new_ircfg()
 
 G2_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)], [ExprAff(r, CST1)]])
 G2_IRB1 = gen_irblock(LBL1, [[ExprAff(a, a+CST1)]])
 G2_IRB2 = gen_irblock(LBL2, [[ExprAff(a, r)]])
 
-G2_IRA.blocks = {irb.loc_key : irb for irb in [G2_IRB0, G2_IRB1, G2_IRB2]}
+for irb in [G2_IRB0, G2_IRB1, G2_IRB2]:
+    G2_IRA.add_irblock(irb)
 
-G2_IRA.graph.add_uniq_edge(G2_IRB0.loc_key, G2_IRB1.loc_key)
-G2_IRA.graph.add_uniq_edge(G2_IRB1.loc_key, G2_IRB2.loc_key)
-G2_IRA.graph.add_uniq_edge(G2_IRB1.loc_key, G2_IRB1.loc_key)
+G2_IRA.add_uniq_edge(G2_IRB0.loc_key, G2_IRB1.loc_key)
+G2_IRA.add_uniq_edge(G2_IRB1.loc_key, G2_IRB2.loc_key)
+G2_IRA.add_uniq_edge(G2_IRB1.loc_key, G2_IRB1.loc_key)
 
 # Expected output for graph 2
-G2_EXP_IRA = IRATest(loc_db)
+G2_EXP_IRA = IRA.new_ircfg()
 
 G2_EXP_IRB0 = gen_irblock(LBL0, [[], [ExprAff(r, CST1)]])
 G2_EXP_IRB1 = gen_irblock(LBL1, [[]])
 G2_EXP_IRB2 = gen_irblock(LBL2, [[]])
 
-G2_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G2_EXP_IRB0, G2_EXP_IRB1,
-                                                 G2_EXP_IRB2]}
+for irb in [G2_EXP_IRB0, G2_EXP_IRB1, G2_EXP_IRB2]:
+    G2_EXP_IRA.add_irblock(irb)
 
 # graph 3 : Natural loop with alive variables
 
-G3_IRA = IRATest(loc_db)
+G3_IRA = IRA.new_ircfg()
 
 G3_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)]])
 G3_IRB1 = gen_irblock(LBL1, [[ExprAff(a, a+CST1)]])
 G3_IRB2 = gen_irblock(LBL2, [[ExprAff(r, a)]])
 
-G3_IRA.blocks = {irb.loc_key : irb for irb in [G3_IRB0, G3_IRB1, G3_IRB2]}
+for irb in [G3_IRB0, G3_IRB1, G3_IRB2]:
+    G3_IRA.add_irblock(irb)
 
-G3_IRA.graph.add_uniq_edge(G3_IRB0.loc_key, G3_IRB1.loc_key)
-G3_IRA.graph.add_uniq_edge(G3_IRB1.loc_key, G3_IRB2.loc_key)
-G3_IRA.graph.add_uniq_edge(G3_IRB1.loc_key, G3_IRB1.loc_key)
+G3_IRA.add_uniq_edge(G3_IRB0.loc_key, G3_IRB1.loc_key)
+G3_IRA.add_uniq_edge(G3_IRB1.loc_key, G3_IRB2.loc_key)
+G3_IRA.add_uniq_edge(G3_IRB1.loc_key, G3_IRB1.loc_key)
 
 # Expected output for graph 3
-G3_EXP_IRA = IRATest(loc_db)
+G3_EXP_IRA = IRA.new_ircfg()
 
 G3_EXP_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)]])
 G3_EXP_IRB1 = gen_irblock(LBL1, [[ExprAff(a, a+CST1)]])
 G3_EXP_IRB2 = gen_irblock(LBL2, [[ExprAff(r, a)]])
 
-G3_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G3_EXP_IRB0, G3_EXP_IRB1,
-                                                 G3_EXP_IRB2]}
+for irb in [G3_EXP_IRB0, G3_EXP_IRB1, G3_EXP_IRB2]:
+    G3_EXP_IRA.add_irblock(irb)
 
 # graph 4 : If/else with dead variables
 
-G4_IRA = IRATest(loc_db)
+G4_IRA = IRA.new_ircfg()
 
 G4_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)]])
 G4_IRB1 = gen_irblock(LBL1, [[ExprAff(a, a+CST1)]])
 G4_IRB2 = gen_irblock(LBL2, [[ExprAff(a, a+CST2)]])
 G4_IRB3 = gen_irblock(LBL3, [[ExprAff(a, CST3)], [ExprAff(r, a)]])
 
-G4_IRA.blocks = {irb.loc_key : irb for irb in [G4_IRB0, G4_IRB1, G4_IRB2,
-                                            G4_IRB3]}
+for irb in [G4_IRB0, G4_IRB1, G4_IRB2, G4_IRB3]:
+    G4_IRA.add_irblock(irb)
 
-G4_IRA.graph.add_uniq_edge(G4_IRB0.loc_key, G4_IRB1.loc_key)
-G4_IRA.graph.add_uniq_edge(G4_IRB0.loc_key, G4_IRB2.loc_key)
-G4_IRA.graph.add_uniq_edge(G4_IRB1.loc_key, G4_IRB3.loc_key)
-G4_IRA.graph.add_uniq_edge(G4_IRB2.loc_key, G4_IRB3.loc_key)
+G4_IRA.add_uniq_edge(G4_IRB0.loc_key, G4_IRB1.loc_key)
+G4_IRA.add_uniq_edge(G4_IRB0.loc_key, G4_IRB2.loc_key)
+G4_IRA.add_uniq_edge(G4_IRB1.loc_key, G4_IRB3.loc_key)
+G4_IRA.add_uniq_edge(G4_IRB2.loc_key, G4_IRB3.loc_key)
 
 # Expected output for graph 4
-G4_EXP_IRA = IRATest(loc_db)
+G4_EXP_IRA = IRA.new_ircfg()
 
 G4_EXP_IRB0 = gen_irblock(LBL0, [[]])
 G4_EXP_IRB1 = gen_irblock(LBL1, [[]])
 G4_EXP_IRB2 = gen_irblock(LBL2, [[]])
 G4_EXP_IRB3 = gen_irblock(LBL3, [[ExprAff(a, CST3)], [ExprAff(r, a)]])
 
-G4_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G4_EXP_IRB0, G4_EXP_IRB1,
-                                                 G4_EXP_IRB2, G4_EXP_IRB3]}
+for irb in [G4_EXP_IRB0, G4_EXP_IRB1, G4_EXP_IRB2, G4_EXP_IRB3]:
+    G4_EXP_IRA.add_irblock(irb)
 
 # graph 5 : Loop and If/else with dead variables
 
-G5_IRA = IRATest(loc_db)
+G5_IRA = IRA.new_ircfg()
 
 G5_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)]])
 G5_IRB1 = gen_irblock(LBL1, [[ExprAff(r, CST2)]])
@@ -187,19 +192,19 @@ G5_IRB3 = gen_irblock(LBL3, [[ExprAff(a, a+CST3)]])
 G5_IRB4 = gen_irblock(LBL4, [[ExprAff(a, a+CST1)]])
 G5_IRB5 = gen_irblock(LBL5, [[ExprAff(a, r)]])
 
-G5_IRA.blocks = {irb.loc_key : irb for irb in [G5_IRB0, G5_IRB1, G5_IRB2, G5_IRB3,
-                                            G5_IRB4, G5_IRB5]}
+for irb in [G5_IRB0, G5_IRB1, G5_IRB2, G5_IRB3, G5_IRB4, G5_IRB5]:
+    G5_IRA.add_irblock(irb)
 
-G5_IRA.graph.add_uniq_edge(G5_IRB0.loc_key, G5_IRB1.loc_key)
-G5_IRA.graph.add_uniq_edge(G5_IRB1.loc_key, G5_IRB2.loc_key)
-G5_IRA.graph.add_uniq_edge(G5_IRB1.loc_key, G5_IRB3.loc_key)
-G5_IRA.graph.add_uniq_edge(G5_IRB2.loc_key, G5_IRB4.loc_key)
-G5_IRA.graph.add_uniq_edge(G5_IRB3.loc_key, G5_IRB4.loc_key)
-G5_IRA.graph.add_uniq_edge(G5_IRB4.loc_key, G5_IRB5.loc_key)
-G5_IRA.graph.add_uniq_edge(G5_IRB4.loc_key, G5_IRB1.loc_key)
+G5_IRA.add_uniq_edge(G5_IRB0.loc_key, G5_IRB1.loc_key)
+G5_IRA.add_uniq_edge(G5_IRB1.loc_key, G5_IRB2.loc_key)
+G5_IRA.add_uniq_edge(G5_IRB1.loc_key, G5_IRB3.loc_key)
+G5_IRA.add_uniq_edge(G5_IRB2.loc_key, G5_IRB4.loc_key)
+G5_IRA.add_uniq_edge(G5_IRB3.loc_key, G5_IRB4.loc_key)
+G5_IRA.add_uniq_edge(G5_IRB4.loc_key, G5_IRB5.loc_key)
+G5_IRA.add_uniq_edge(G5_IRB4.loc_key, G5_IRB1.loc_key)
 
 # Expected output for graph 5
-G5_EXP_IRA = IRATest(loc_db)
+G5_EXP_IRA = IRA.new_ircfg()
 
 G5_EXP_IRB0 = gen_irblock(LBL0, [[]])
 G5_EXP_IRB1 = gen_irblock(LBL1, [[ExprAff(r, CST2)]])
@@ -208,72 +213,72 @@ G5_EXP_IRB3 = gen_irblock(LBL3, [[]])
 G5_EXP_IRB4 = gen_irblock(LBL4, [[]])
 G5_EXP_IRB5 = gen_irblock(LBL5, [[]])
 
-G5_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G5_EXP_IRB0, G5_EXP_IRB1,
-                                                 G5_EXP_IRB2, G5_EXP_IRB3,
-                                                 G5_EXP_IRB4, G5_EXP_IRB5]}
+for irb in [G5_EXP_IRB0, G5_EXP_IRB1, G5_EXP_IRB2,
+            G5_EXP_IRB3, G5_EXP_IRB4, G5_EXP_IRB5]:
+    G5_EXP_IRA.add_irblock(irb)
 
 # graph 6 : Natural loop with dead variables symetric affectation
 # (a = b <-> b = a )
 
-G6_IRA = IRATest(loc_db)
+G6_IRA = IRA.new_ircfg()
 
 G6_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)]])
 G6_IRB1 = gen_irblock(LBL1, [[ExprAff(b, a)]])
 G6_IRB2 = gen_irblock(LBL2, [[ExprAff(a, b)]])
 G6_IRB3 = gen_irblock(LBL3, [[ExprAff(r, CST2)]])
 
-G6_IRA.blocks = {irb.loc_key : irb for irb in [G6_IRB0, G6_IRB1, G6_IRB2,
-                                            G6_IRB3]}
+for irb in [G6_IRB0, G6_IRB1, G6_IRB2, G6_IRB3]:
+    G6_IRA.add_irblock(irb)
 
-G6_IRA.graph.add_uniq_edge(G6_IRB0.loc_key, G6_IRB1.loc_key)
-G6_IRA.graph.add_uniq_edge(G6_IRB1.loc_key, G6_IRB2.loc_key)
-G6_IRA.graph.add_uniq_edge(G6_IRB2.loc_key, G6_IRB1.loc_key)
-G6_IRA.graph.add_uniq_edge(G6_IRB2.loc_key, G6_IRB3.loc_key)
+G6_IRA.add_uniq_edge(G6_IRB0.loc_key, G6_IRB1.loc_key)
+G6_IRA.add_uniq_edge(G6_IRB1.loc_key, G6_IRB2.loc_key)
+G6_IRA.add_uniq_edge(G6_IRB2.loc_key, G6_IRB1.loc_key)
+G6_IRA.add_uniq_edge(G6_IRB2.loc_key, G6_IRB3.loc_key)
 
 # Expected output for graph 6
-G6_EXP_IRA = IRATest(loc_db)
+G6_EXP_IRA = IRA.new_ircfg()
 
 G6_EXP_IRB0 = gen_irblock(LBL0, [[]])
 G6_EXP_IRB1 = gen_irblock(LBL1, [[]])
 G6_EXP_IRB2 = gen_irblock(LBL2, [[]])
 G6_EXP_IRB3 = gen_irblock(LBL3, [[ExprAff(r, CST2)]])
 
-G6_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G6_EXP_IRB0, G6_EXP_IRB1,
-                                                 G6_EXP_IRB2, G6_EXP_IRB3]}
+for irb in [G6_EXP_IRB0, G6_EXP_IRB1, G6_EXP_IRB2, G6_EXP_IRB3]:
+    G6_EXP_IRA.add_irblock(irb)
 
 # graph 7 : Double entry loop with dead variables
 
-G7_IRA = IRATest(loc_db)
+G7_IRA = IRA.new_ircfg()
 
 G7_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)], [ExprAff(r, CST1)]])
 G7_IRB1 = gen_irblock(LBL1, [[ExprAff(a, a+CST1)]])
 G7_IRB2 = gen_irblock(LBL2, [[ExprAff(a, a+CST2)]])
 G7_IRB3 = gen_irblock(LBL3, [[ExprAff(a, r)]])
 
-G7_IRA.blocks = {irb.loc_key : irb for irb in [G7_IRB0, G7_IRB1, G7_IRB2,
-                                            G7_IRB3]}
+for irb in [G7_IRB0, G7_IRB1, G7_IRB2, G7_IRB3]:
+    G7_IRA.add_irblock(irb)
 
-G7_IRA.graph.add_uniq_edge(G7_IRB0.loc_key, G7_IRB1.loc_key)
-G7_IRA.graph.add_uniq_edge(G7_IRB1.loc_key, G7_IRB2.loc_key)
-G7_IRA.graph.add_uniq_edge(G7_IRB2.loc_key, G7_IRB1.loc_key)
-G7_IRA.graph.add_uniq_edge(G7_IRB2.loc_key, G7_IRB3.loc_key)
-G7_IRA.graph.add_uniq_edge(G7_IRB0.loc_key, G7_IRB2.loc_key)
+G7_IRA.add_uniq_edge(G7_IRB0.loc_key, G7_IRB1.loc_key)
+G7_IRA.add_uniq_edge(G7_IRB1.loc_key, G7_IRB2.loc_key)
+G7_IRA.add_uniq_edge(G7_IRB2.loc_key, G7_IRB1.loc_key)
+G7_IRA.add_uniq_edge(G7_IRB2.loc_key, G7_IRB3.loc_key)
+G7_IRA.add_uniq_edge(G7_IRB0.loc_key, G7_IRB2.loc_key)
 
 
 # Expected output for graph 7
-G7_EXP_IRA = IRATest(loc_db)
+G7_EXP_IRA = IRA.new_ircfg()
 
 G7_EXP_IRB0 = gen_irblock(LBL0, [[], [ExprAff(r, CST1)]])
 G7_EXP_IRB1 = gen_irblock(LBL1, [[]])
 G7_EXP_IRB2 = gen_irblock(LBL2, [[]])
 G7_EXP_IRB3 = gen_irblock(LBL3, [[]])
 
-G7_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G7_EXP_IRB0, G7_EXP_IRB1,
-                                                 G7_EXP_IRB2, G7_EXP_IRB3]}
+for irb in [G7_EXP_IRB0, G7_EXP_IRB1, G7_EXP_IRB2, G7_EXP_IRB3]:
+    G7_EXP_IRA.add_irblock(irb)
 
 # graph 8 : Nested loops with dead variables
 
-G8_IRA = IRATest(loc_db)
+G8_IRA = IRA.new_ircfg()
 
 G8_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)], [ExprAff(b, CST1)]])
 G8_IRB1 = gen_irblock(LBL1, [[ExprAff(a, a+CST1)]])
@@ -281,31 +286,31 @@ G8_IRB2 = gen_irblock(LBL2, [[ExprAff(b, b+CST2)]])
 G8_IRB3 = gen_irblock(LBL3, [[ExprAff(a, b)]])
 
 
-G8_IRA.blocks = {irb.loc_key : irb for irb in [G8_IRB0, G8_IRB1, G8_IRB2,
-                                            G8_IRB3]}
+for irb in [G8_IRB0, G8_IRB1, G8_IRB2, G8_IRB3]:
+    G8_IRA.add_irblock(irb)
 
-G8_IRA.graph.add_uniq_edge(G8_IRB0.loc_key, G8_IRB1.loc_key)
-G8_IRA.graph.add_uniq_edge(G8_IRB1.loc_key, G8_IRB2.loc_key)
-G8_IRA.graph.add_uniq_edge(G8_IRB2.loc_key, G8_IRB1.loc_key)
-G8_IRA.graph.add_uniq_edge(G8_IRB2.loc_key, G8_IRB3.loc_key)
-G8_IRA.graph.add_uniq_edge(G8_IRB3.loc_key, G8_IRB2.loc_key)
+G8_IRA.add_uniq_edge(G8_IRB0.loc_key, G8_IRB1.loc_key)
+G8_IRA.add_uniq_edge(G8_IRB1.loc_key, G8_IRB2.loc_key)
+G8_IRA.add_uniq_edge(G8_IRB2.loc_key, G8_IRB1.loc_key)
+G8_IRA.add_uniq_edge(G8_IRB2.loc_key, G8_IRB3.loc_key)
+G8_IRA.add_uniq_edge(G8_IRB3.loc_key, G8_IRB2.loc_key)
 
 
 # Expected output for graph 8
 
-G8_EXP_IRA = IRATest(loc_db)
+G8_EXP_IRA = IRA.new_ircfg()
 
 G8_EXP_IRB0 = gen_irblock(LBL0, [[], []])
 G8_EXP_IRB1 = gen_irblock(LBL1, [[]])
 G8_EXP_IRB2 = gen_irblock(LBL2, [[]])
 G8_EXP_IRB3 = gen_irblock(LBL3, [[]])
 
-G8_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G8_EXP_IRB0, G8_EXP_IRB1,
-                                                 G8_EXP_IRB2, G8_EXP_IRB3]}
+for irb in [G8_EXP_IRB0, G8_EXP_IRB1, G8_EXP_IRB2, G8_EXP_IRB3]:
+    G8_EXP_IRA.add_irblock(irb)
 
 # graph 9 : Miultiple-exits loops with dead variables
 
-G9_IRA = IRATest(loc_db)
+G9_IRA = IRA.new_ircfg()
 
 G9_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)], [ExprAff(b, CST1)]])
 G9_IRB1 = gen_irblock(LBL1, [[ExprAff(a, a+CST1)], [ExprAff(b, b+CST1)]])
@@ -313,22 +318,22 @@ G9_IRB2 = gen_irblock(LBL2, [[ExprAff(a, a+CST2)], [ExprAff(b, b+CST2)]])
 G9_IRB3 = gen_irblock(LBL3, [[ExprAff(a, b)]])
 G9_IRB4 = gen_irblock(LBL4, [[ExprAff(r, a)], [ExprAff(r, b)]])
 
-G9_IRA.blocks = {irb.loc_key : irb for irb in [G9_IRB0, G9_IRB1, G9_IRB2,
-                                            G9_IRB3, G9_IRB4]}
+for irb in [G9_IRB0, G9_IRB1, G9_IRB2, G9_IRB3, G9_IRB4]:
+    G9_IRA.add_irblock(irb)
 
-G9_IRA.graph.add_uniq_edge(G9_IRB0.loc_key, G9_IRB4.loc_key)
-G9_IRA.graph.add_uniq_edge(G9_IRB0.loc_key, G9_IRB1.loc_key)
-G9_IRA.graph.add_uniq_edge(G9_IRB1.loc_key, G9_IRB0.loc_key)
-G9_IRA.graph.add_uniq_edge(G9_IRB1.loc_key, G9_IRB4.loc_key)
-G9_IRA.graph.add_uniq_edge(G9_IRB1.loc_key, G9_IRB2.loc_key)
-G9_IRA.graph.add_uniq_edge(G9_IRB2.loc_key, G9_IRB0.loc_key)
-G9_IRA.graph.add_uniq_edge(G9_IRB2.loc_key, G9_IRB3.loc_key)
-G9_IRA.graph.add_uniq_edge(G9_IRB3.loc_key, G9_IRB4.loc_key)
+G9_IRA.add_uniq_edge(G9_IRB0.loc_key, G9_IRB4.loc_key)
+G9_IRA.add_uniq_edge(G9_IRB0.loc_key, G9_IRB1.loc_key)
+G9_IRA.add_uniq_edge(G9_IRB1.loc_key, G9_IRB0.loc_key)
+G9_IRA.add_uniq_edge(G9_IRB1.loc_key, G9_IRB4.loc_key)
+G9_IRA.add_uniq_edge(G9_IRB1.loc_key, G9_IRB2.loc_key)
+G9_IRA.add_uniq_edge(G9_IRB2.loc_key, G9_IRB0.loc_key)
+G9_IRA.add_uniq_edge(G9_IRB2.loc_key, G9_IRB3.loc_key)
+G9_IRA.add_uniq_edge(G9_IRB3.loc_key, G9_IRB4.loc_key)
 
 
 # Expected output for graph 9
 
-G9_EXP_IRA = IRATest(loc_db)
+G9_EXP_IRA = IRA.new_ircfg()
 
 G9_EXP_IRB0 = gen_irblock(LBL0, [[], [ExprAff(b, CST1)]])
 G9_EXP_IRB1 = gen_irblock(LBL1, [[], [ExprAff(b, b+CST1)]])
@@ -336,42 +341,42 @@ G9_EXP_IRB2 = gen_irblock(LBL2, [[], [ExprAff(b, b+CST2)]])
 G9_EXP_IRB3 = gen_irblock(LBL3, [[]])
 G9_EXP_IRB4 = gen_irblock(LBL4, [[], [ExprAff(r, b)]])
 
-G9_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G9_EXP_IRB0, G9_EXP_IRB1,
-                                                 G9_EXP_IRB2, G9_EXP_IRB3,
-                                                 G9_EXP_IRB4]}
+for irb in [G9_EXP_IRB0, G9_EXP_IRB1, G9_EXP_IRB2, G9_EXP_IRB3, G9_EXP_IRB4]:
+    G9_EXP_IRA.add_irblock(irb)
 
 # graph 10 : Natural loop with alive variables symetric affectation
 # (a = b <-> b = a )
 
-G10_IRA = IRATest(loc_db)
+G10_IRA = IRA.new_ircfg()
 
 G10_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)]])
 G10_IRB1 = gen_irblock(LBL1, [[ExprAff(b, a)]])
 G10_IRB2 = gen_irblock(LBL2, [[ExprAff(a, b)]])
 G10_IRB3 = gen_irblock(LBL3, [[ExprAff(r, CST1)]])
 
-G10_IRA.blocks = {irb.loc_key : irb for irb in [G10_IRB0, G10_IRB1,
-                                             G10_IRB2, G10_IRB3]}
+for irb in [G10_IRB0, G10_IRB1, G10_IRB2, G10_IRB3]:
+    G10_IRA.add_irblock(irb)
+
 
-G10_IRA.graph.add_uniq_edge(G10_IRB0.loc_key, G10_IRB1.loc_key)
-G10_IRA.graph.add_uniq_edge(G10_IRB1.loc_key, G10_IRB2.loc_key)
-G10_IRA.graph.add_uniq_edge(G10_IRB2.loc_key, G10_IRB1.loc_key)
-G10_IRA.graph.add_uniq_edge(G10_IRB2.loc_key, G10_IRB3.loc_key)
+G10_IRA.add_uniq_edge(G10_IRB0.loc_key, G10_IRB1.loc_key)
+G10_IRA.add_uniq_edge(G10_IRB1.loc_key, G10_IRB2.loc_key)
+G10_IRA.add_uniq_edge(G10_IRB2.loc_key, G10_IRB1.loc_key)
+G10_IRA.add_uniq_edge(G10_IRB2.loc_key, G10_IRB3.loc_key)
 
 # Expected output for graph 10
-G10_EXP_IRA = IRATest(loc_db)
+G10_EXP_IRA = IRA.new_ircfg()
 
 G10_EXP_IRB0 = gen_irblock(LBL0, [[]])
 G10_EXP_IRB1 = gen_irblock(LBL1, [[]])
 G10_EXP_IRB2 = gen_irblock(LBL2, [[]])
 G10_EXP_IRB3 = gen_irblock(LBL3, [[ExprAff(r, CST1)]])
 
-G10_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G10_EXP_IRB0, G10_EXP_IRB1,
-                                                  G10_EXP_IRB2, G10_EXP_IRB3]}
+for irb in [G10_EXP_IRB0, G10_EXP_IRB1, G10_EXP_IRB2, G10_EXP_IRB3]:
+    G10_EXP_IRA.add_irblock(irb)
 
 # graph 11 : If/Else conditions with alive variables
 
-G11_IRA = IRATest(loc_db)
+G11_IRA = IRA.new_ircfg()
 
 G11_IRB0 = gen_irblock(LBL0, [[ExprAff(a, b)]])
 G11_IRB1 = gen_irblock(LBL1, [[ExprAff(b, a)]])
@@ -380,17 +385,18 @@ G11_IRB3 = gen_irblock(LBL3, [[ExprAff(a, a+CST1)]])
 G11_IRB4 = gen_irblock(LBL4, [[ExprAff(b, b+CST1)]])
 
 
-G11_IRA.blocks = {irb.loc_key : irb for irb in [G11_IRB0, G11_IRB1, G11_IRB2]}
+for irb in [G11_IRB0, G11_IRB1, G11_IRB2]:
+    G11_IRA.add_irblock(irb)
 
-G11_IRA.graph.add_uniq_edge(G11_IRB0.loc_key, G11_IRB1.loc_key)
-#G11_IRA.graph.add_uniq_edge(G11_IRB3.loc_key, G11_IRB1.loc_key)
-G11_IRA.graph.add_uniq_edge(G11_IRB1.loc_key, G11_IRB0.loc_key)
-#G11_IRA.graph.add_uniq_edge(G11_IRB4.loc_key, G11_IRB0.loc_key)
-G11_IRA.graph.add_uniq_edge(G11_IRB1.loc_key, G11_IRB2.loc_key)
+G11_IRA.add_uniq_edge(G11_IRB0.loc_key, G11_IRB1.loc_key)
+#G11_IRA.add_uniq_edge(G11_IRB3.loc_key, G11_IRB1.loc_key)
+G11_IRA.add_uniq_edge(G11_IRB1.loc_key, G11_IRB0.loc_key)
+#G11_IRA.add_uniq_edge(G11_IRB4.loc_key, G11_IRB0.loc_key)
+G11_IRA.add_uniq_edge(G11_IRB1.loc_key, G11_IRB2.loc_key)
 
 
 # Expected output for graph 11
-G11_EXP_IRA = IRATest(loc_db)
+G11_EXP_IRA = IRA.new_ircfg()
 
 G11_EXP_IRB0 = gen_irblock(LBL0, [[ExprAff(a, b)]])
 G11_EXP_IRB1 = gen_irblock(LBL1, [[ExprAff(b, a)]])
@@ -398,13 +404,14 @@ G11_EXP_IRB2 = gen_irblock(LBL2, [[ExprAff(r, a)]])
 #G11_EXP_IRB3 = gen_irblock(LBL3, [[ExprAff(a, a+CST1)]])
 #G11_EXP_IRB4 = gen_irblock(LBL4, [[ExprAff(b, b+CST1)]])
 
-G11_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G11_EXP_IRB0, G11_EXP_IRB1,
-                                                  G11_EXP_IRB2]}
+for irb in [G11_EXP_IRB0, G11_EXP_IRB1,
+            G11_EXP_IRB2]:
+    G11_EXP_IRA.add_irblock(irb)
 
 # graph 12 : Graph with multiple out points and useless definitions
 # of return register
 
-G12_IRA = IRATest(loc_db)
+G12_IRA = IRA.new_ircfg()
 
 G12_IRB0 = gen_irblock(LBL0, [[ExprAff(r, CST1)], [ExprAff(a, CST2)]])
 G12_IRB1 = gen_irblock(LBL1, [[ExprAff(r, CST2)]])
@@ -413,17 +420,17 @@ G12_IRB3 = gen_irblock(LBL3, [[ExprAff(r, CST3)]])
 G12_IRB4 = gen_irblock(LBL4, [[ExprAff(r, CST2)]])
 G12_IRB5 = gen_irblock(LBL5, [[ExprAff(r, b)]])
 
-G12_IRA.blocks = {irb.loc_key : irb for irb in [G12_IRB0, G12_IRB1, G12_IRB2,
-                                             G12_IRB3, G12_IRB4, G12_IRB5]}
+for irb in [G12_IRB0, G12_IRB1, G12_IRB2, G12_IRB3, G12_IRB4, G12_IRB5]:
+    G12_IRA.add_irblock(irb)
 
-G12_IRA.graph.add_uniq_edge(G12_IRB0.loc_key, G12_IRB1.loc_key)
-G12_IRA.graph.add_uniq_edge(G12_IRB0.loc_key, G12_IRB2.loc_key)
-G12_IRA.graph.add_uniq_edge(G12_IRB2.loc_key, G12_IRB3.loc_key)
-G12_IRA.graph.add_uniq_edge(G12_IRB2.loc_key, G12_IRB4.loc_key)
-G12_IRA.graph.add_uniq_edge(G12_IRB4.loc_key, G12_IRB5.loc_key)
+G12_IRA.add_uniq_edge(G12_IRB0.loc_key, G12_IRB1.loc_key)
+G12_IRA.add_uniq_edge(G12_IRB0.loc_key, G12_IRB2.loc_key)
+G12_IRA.add_uniq_edge(G12_IRB2.loc_key, G12_IRB3.loc_key)
+G12_IRA.add_uniq_edge(G12_IRB2.loc_key, G12_IRB4.loc_key)
+G12_IRA.add_uniq_edge(G12_IRB4.loc_key, G12_IRB5.loc_key)
 
 # Expected output for graph 12
-G12_EXP_IRA = IRATest(loc_db)
+G12_EXP_IRA = IRA.new_ircfg()
 
 G12_EXP_IRB0 = gen_irblock(LBL0, [[], []])
 G12_EXP_IRB1 = gen_irblock(LBL1, [[ExprAff(r, CST2)]])
@@ -433,13 +440,14 @@ G12_EXP_IRB4 = gen_irblock(LBL4, [[]])
 G12_EXP_IRB5 = gen_irblock(LBL5, [[ExprAff(r, b)]])
 
 
-G12_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G12_EXP_IRB0, G12_EXP_IRB1,
-                                                  G12_EXP_IRB2, G12_EXP_IRB3,
-                                                  G12_EXP_IRB4, G12_EXP_IRB5]}
+for irb in [G12_EXP_IRB0, G12_EXP_IRB1,
+            G12_EXP_IRB2, G12_EXP_IRB3,
+            G12_EXP_IRB4, G12_EXP_IRB5]:
+    G12_EXP_IRA.add_irblock(irb)
 
 # graph 13 : Graph where a leaf has lost its son
 
-G13_IRA = IRATest(loc_db)
+G13_IRA = IRA.new_ircfg()
 
 G13_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)], [ExprAff(b, CST2)]])
 G13_IRB1 = gen_irblock(LBL1, [[ExprAff(r, b)]])
@@ -448,16 +456,16 @@ G13_IRB2 = gen_irblock(LBL2, [[ExprAff(d, CST2)], [ExprAff(a, b+CST1),
 G13_IRB3 = gen_irblock(LBL3, [[]]) # lost son
 G13_IRB4 = gen_irblock(LBL4, [[ExprAff(b, CST2)]])
 
-G13_IRA.blocks = {irb.loc_key : irb for irb in [G13_IRB0, G13_IRB1, G13_IRB2,
-                                             G13_IRB4]}
+for irb in [G13_IRB0, G13_IRB1, G13_IRB2, G13_IRB4]:
+    G13_IRA.add_irblock(irb)
 
-G13_IRA.graph.add_uniq_edge(G13_IRB0.loc_key, G13_IRB1.loc_key)
-G13_IRA.graph.add_uniq_edge(G13_IRB0.loc_key, G13_IRB4.loc_key)
-G13_IRA.graph.add_uniq_edge(G13_IRB2.loc_key, G13_IRB3.loc_key)
-G13_IRA.graph.add_uniq_edge(G13_IRB4.loc_key, G13_IRB2.loc_key)
+G13_IRA.add_uniq_edge(G13_IRB0.loc_key, G13_IRB1.loc_key)
+G13_IRA.add_uniq_edge(G13_IRB0.loc_key, G13_IRB4.loc_key)
+G13_IRA.add_uniq_edge(G13_IRB2.loc_key, G13_IRB3.loc_key)
+G13_IRA.add_uniq_edge(G13_IRB4.loc_key, G13_IRB2.loc_key)
 
 # Expected output for graph 13
-G13_EXP_IRA = IRATest(loc_db)
+G13_EXP_IRA = IRA.new_ircfg()
 
 G13_EXP_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)], [ExprAff(b, CST2)]])
 G13_EXP_IRB1 = gen_irblock(LBL1, [[ExprAff(r, b)]])
@@ -466,58 +474,62 @@ G13_EXP_IRB2 = gen_irblock(LBL2, [[ExprAff(d, CST2)], [ExprAff(a, b+CST1),
 G13_EXP_IRB3 = gen_irblock(LBL3, [[]])
 G13_EXP_IRB4 = gen_irblock(LBL4, [[ExprAff(b, CST2)]])
 
-G13_EXP_IRA.blocks = {irb.loc_key: irb for irb in [G13_EXP_IRB0, G13_EXP_IRB1,
-                                                 G13_EXP_IRB2, G13_EXP_IRB4]}
+for irb in [G13_EXP_IRB0, G13_EXP_IRB1, G13_EXP_IRB2, G13_EXP_IRB4]:
+    G13_EXP_IRA.add_irblock(irb)
 
 #G13_EXP_IRA = G13_IRA
 
 # graph 14 : Graph where variable assigned multiple times in a block but still
 # useful in the end
 
-G14_IRA = IRATest(loc_db)
+G14_IRA = IRA.new_ircfg()
 
 G14_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)], [ExprAff(c, a)],
                               [ExprAff(a, CST2)]])
 G14_IRB1 = gen_irblock(LBL1, [[ExprAff(r, a+c)]])
 
-G14_IRA.blocks = {irb.loc_key : irb for irb in [G14_IRB0, G14_IRB1]}
+for irb in [G14_IRB0, G14_IRB1]:
+    G14_IRA.add_irblock(irb)
 
-G14_IRA.graph.add_uniq_edge(G14_IRB0.loc_key, G14_IRB1.loc_key)
+G14_IRA.add_uniq_edge(G14_IRB0.loc_key, G14_IRB1.loc_key)
 
 # Expected output for graph 1
-G14_EXP_IRA = IRATest(loc_db)
+G14_EXP_IRA = IRA.new_ircfg()
 
 G14_EXP_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1)], [ExprAff(c, a)],
                                   [ExprAff(a, CST2)]])
 G14_EXP_IRB1 = gen_irblock(LBL1, [[ExprAff(r, a+c)]])
 
-G14_EXP_IRA.blocks = {irb.loc_key: irb for irb in [G14_EXP_IRB0, G14_EXP_IRB1]}
+for irb in [G14_EXP_IRB0, G14_EXP_IRB1]:
+    G14_EXP_IRA.add_irblock(irb)
 
 # graph 15 : Graph where variable assigned multiple and read at the same time,
 # but useless
 
-G15_IRA = IRATest(loc_db)
+G15_IRA = IRA.new_ircfg()
 
 G15_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST2)], [ExprAff(a, CST1),
                                                    ExprAff(b, a+CST2),
                                                    ExprAff(c, CST1)]])
 G15_IRB1 = gen_irblock(LBL1, [[ExprAff(r, a)]])
 
-G15_IRA.blocks = {irb.loc_key : irb for irb in [G15_IRB0, G15_IRB1]}
+for irb in [G15_IRB0, G15_IRB1]:
+    G15_IRA.add_irblock(irb)
 
-G15_IRA.graph.add_uniq_edge(G15_IRB0.loc_key, G15_IRB1.loc_key)
+G15_IRA.add_uniq_edge(G15_IRB0.loc_key, G15_IRB1.loc_key)
 
 # Expected output for graph 1
-G15_EXP_IRA = IRATest(loc_db)
+G15_EXP_IRA = IRA.new_ircfg()
 
 G15_EXP_IRB0 = gen_irblock(LBL0, [[], [ExprAff(a, CST1)]])
 G15_EXP_IRB1 = gen_irblock(LBL1, [[ExprAff(r, a)]])
 
-G15_EXP_IRA.blocks = {irb.loc_key: irb for irb in [G15_EXP_IRB0, G15_EXP_IRB1]}
+for irb in [G15_EXP_IRB0, G15_EXP_IRB1]:
+    G15_EXP_IRA.add_irblock(irb)
 
 # graph 16 : Graph where variable assigned multiple times in the same bloc
 
-G16_IRA = IRATest(loc_db)
+G16_IRA = IRA.new_ircfg()
 
 G16_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1), ExprAff(b, CST2),
                                ExprAff(c, CST3)], [ExprAff(a, c+CST1),
@@ -525,25 +537,28 @@ G16_IRB0 = gen_irblock(LBL0, [[ExprAff(a, CST1), ExprAff(b, CST2),
 G16_IRB1 = gen_irblock(LBL1, [[ExprAff(r, a+b)], [ExprAff(r, c+r)]])
 G16_IRB2 = gen_irblock(LBL2, [[]])
 
-G16_IRA.blocks = {irb.loc_key : irb for irb in [G16_IRB0, G16_IRB1]}
+for irb in [G16_IRB0, G16_IRB1]:
+    G16_IRA.add_irblock(irb)
 
-G16_IRA.graph.add_uniq_edge(G16_IRB0.loc_key, G16_IRB1.loc_key)
-G16_IRA.graph.add_uniq_edge(G16_IRB1.loc_key, G16_IRB2.loc_key)
+G16_IRA.add_uniq_edge(G16_IRB0.loc_key, G16_IRB1.loc_key)
+G16_IRA.add_uniq_edge(G16_IRB1.loc_key, G16_IRB2.loc_key)
 
-G16_IRA.blocks = {irb.loc_key : irb for irb in [G16_IRB0, G16_IRB1]}
+for irb in [G16_IRB0, G16_IRB1]:
+    G16_IRA.add_irblock(irb)
 
 # Expected output for graph 1
-G16_EXP_IRA = IRATest(loc_db)
+G16_EXP_IRA = IRA.new_ircfg()
 
 G16_EXP_IRB0 = gen_irblock(LBL0, [[ExprAff(c, CST3)], [ExprAff(a, c + CST1),
                                                        ExprAff(b, c + CST2)]])
 G16_EXP_IRB1 = gen_irblock(LBL1, [[ExprAff(r, a+b)], [ExprAff(r, c+r)]])
 
-G16_EXP_IRA.blocks = {irb.loc_key: irb for irb in [G16_EXP_IRB0, G16_EXP_IRB1]}
+for irb in [G16_EXP_IRB0, G16_EXP_IRB1]:
+    G16_EXP_IRA.add_irblock(irb)
 
 # graph 17 : parallel ir
 
-G17_IRA = IRATest(loc_db)
+G17_IRA = IRA.new_ircfg()
 
 G17_IRB0 = gen_irblock(LBL0, [[ExprAff(a, a*b),
                                ExprAff(b, c),
@@ -599,12 +614,13 @@ G17_IRB0 = gen_irblock(LBL0, [[ExprAff(a, a*b),
 
                          ])
 
-G17_IRA.blocks = {irb.loc_key : irb for irb in [G17_IRB0]}
+for irb in [G17_IRB0]:
+    G17_IRA.add_irblock(irb)
 
-G17_IRA.graph.add_node(G17_IRB0.loc_key)
+#G17_IRA.graph.add_node(G17_IRB0.loc_key)
 
 # Expected output for graph 17
-G17_EXP_IRA = IRATest(loc_db)
+G17_EXP_IRA = IRA.new_ircfg()
 
 G17_EXP_IRB0 = gen_irblock(LBL0, [[],
 
@@ -641,7 +657,8 @@ G17_EXP_IRB0 = gen_irblock(LBL0, [[],
                                   # Trick because a+b+c != ((a+b)+c)
                                  ])
 
-G17_EXP_IRA.blocks = {irb.loc_key : irb for irb in [G17_EXP_IRB0]}
+for irb in [G17_EXP_IRB0]:
+    G17_EXP_IRA.add_irblock(irb)
 
 # Begining  of tests
 
@@ -669,16 +686,16 @@ for test_nb, test in enumerate([(G1_IRA, G1_EXP_IRA),
     print "[+] Test", test_nb+1
 
     # Print initial graph, for debug
-    open("graph_%02d.dot" % (test_nb+1), "w").write(g_ira.graph.dot())
+    open("graph_%02d.dot" % (test_nb+1), "w").write(g_ira.dot())
 
     reaching_defs = ReachingDefinitions(g_ira)
     defuse = DiGraphDefUse(reaching_defs, deref_mem=True)
 
     # # Simplify graph
-    dead_simp(g_ira)
+    dead_simp(IRA, g_ira)
 
     # # Print simplified graph, for debug
-    open("simp_graph_%02d.dot" % (test_nb+1), "w").write(g_ira.graph.dot())
+    open("simp_graph_%02d.dot" % (test_nb+1), "w").write(g_ira.dot())
 
     # Same number of blocks
     assert len(g_ira.blocks) == len(g_exp_ira.blocks)