[llvm-commits] [llvm] r95319 - in /llvm/trunk: lib/CodeGen/ProcessImplicitDefs.cpp test/CodeGen/X86/2010-02-03-DualUndef.ll

[Jakob Stoklund Olesen]

Author: stoklund
Date: Thu Feb  4 12:46:28 2010
New Revision: 95319

URL: http://llvm.org/viewvc/llvm-project?rev=95319&view=rev
Log:
Fix small bug in handling instructions with more than one implicitly defined operand.

ProcessImplicitDefs would only mark one operand per instruction with <undef>.
This fixed PR6086.

Added:
    llvm/trunk/test/CodeGen/X86/2010-02-03-DualUndef.ll
Modified:
    llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp

Modified: llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp?rev=95319&r1=95318&r2=95319&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp (original)
+++ llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp Thu Feb  4 12:46:28 2010
@@ -264,8 +264,8 @@
         }
       }
       RUses.clear();
+      ModInsts.clear();
     }
-    ModInsts.clear();
     ImpDefRegs.clear();
     ImpDefMIs.clear();
   }

Added: llvm/trunk/test/CodeGen/X86/2010-02-03-DualUndef.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/2010-02-03-DualUndef.ll?rev=95319&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/X86/2010-02-03-DualUndef.ll (added)
+++ llvm/trunk/test/CodeGen/X86/2010-02-03-DualUndef.ll Thu Feb  4 12:46:28 2010
@@ -0,0 +1,27 @@
+; RUN: llc < %s -march=x86-64
+; PR6086
+define fastcc void @prepOutput() nounwind {
+bb:                                               ; preds = %output.exit
+  br label %bb.i1
+
+bb.i1:                                            ; preds = %bb7.i, %bb
+  br i1 undef, label %bb7.i, label %bb.nph.i
+
+bb.nph.i:                                         ; preds = %bb.i1
+  br label %bb3.i
+
+bb3.i:                                            ; preds = %bb5.i6, %bb.nph.i
+  %tmp10.i = trunc i64 undef to i32               ; <i32> [#uses=1]
+  br i1 undef, label %bb4.i, label %bb5.i6
+
+bb4.i:                                            ; preds = %bb3.i
+  br label %bb5.i6
+
+bb5.i6:                                           ; preds = %bb4.i, %bb3.i
+  %0 = phi i32 [ undef, %bb4.i ], [ undef, %bb3.i ] ; <i32> [#uses=1]
+  %1 = icmp slt i32 %0, %tmp10.i                  ; <i1> [#uses=1]
+  br i1 %1, label %bb7.i, label %bb3.i
+
+bb7.i:                                            ; preds = %bb5.i6, %bb.i1
+  br label %bb.i1
+}