Last commit accidentially deleted this code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65679 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 0103e2042f3007d6295c6a97c2af8a45e838f0db..461d839f1c0965027bbd822edfeb229922fe2e6a 100644 (file)
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -1637,6 +1637,10 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM,
             PotentialDeadStoreSlots.push_back(ReuseSlot);
           }
 
+          // Assumes this is the last use. IsKill will be unset if reg is reused
+          // unless it's a two-address operand.
+          if (ti == -1)
+            MI.getOperand(i).setIsKill();
           continue;
         }  // CanReuse
         

diff --git a/test/CodeGen/ARM/2009-02-27-SpillerBug.ll b/test/CodeGen/ARM/2009-02-27-SpillerBug.ll
new file mode 100644 (file)
index 0000000..56e949f
--- /dev/null
+++ b/test/CodeGen/ARM/2009-02-27-SpillerBug.ll
@@ -0,0 +1,229 @@
+; RUN: llvm-as < %s | llc -march=arm -mattr=+v6,+vfp2
+
+target triple = "arm-apple-darwin9"
+@a = external global double            ; <double*> [#uses=1]
+@N = external global double            ; <double*> [#uses=1]
+
+declare double @llvm.exp.f64(double) nounwind readonly
+
+define fastcc void @findratio(double* nocapture %res1, double* nocapture %res2) nounwind {
+bb.thread:
+       br label %bb52
+
+bb32:          ; preds = %bb52
+       %0 = add double 0.000000e+00, 0.000000e+00              ; <double> [#uses=1]
+       %1 = add i32 %j.1, 1            ; <i32> [#uses=1]
+       br label %bb52
+
+bb52:          ; preds = %bb53, %bb32, %bb.thread
+       %i.3494 = phi i32 [ 0, %bb.thread ], [ %3, %bb53 ], [ %i.3494, %bb32 ]          ; <i32> [#uses=2]
+       %k.4 = phi double [ %0, %bb32 ], [ 0.000000e+00, %bb53 ], [ 0.000000e+00, %bb.thread ]          ; <double> [#uses=2]
+       %j.1 = phi i32 [ %1, %bb32 ], [ 0, %bb53 ], [ 0, %bb.thread ]           ; <i32> [#uses=2]
+       %2 = icmp sgt i32 %j.1, 99              ; <i1> [#uses=1]
+       br i1 %2, label %bb53, label %bb32
+
+bb53:          ; preds = %bb52
+       %3 = add i32 %i.3494, 1         ; <i32> [#uses=2]
+       %phitmp = icmp sgt i32 %3, 999999               ; <i1> [#uses=1]
+       br i1 %phitmp, label %bb55, label %bb52
+
+bb55:          ; preds = %bb53
+       %4 = load double* @a, align 4           ; <double> [#uses=10]
+       %5 = add double %4, 0.000000e+00                ; <double> [#uses=16]
+       %6 = fcmp ogt double %k.4, 0.000000e+00         ; <i1> [#uses=1]
+       %.pn404 = mul double %4, %4             ; <double> [#uses=4]
+       %.pn402 = mul double %5, %5             ; <double> [#uses=5]
+       %.pn165.in = load double* @N            ; <double> [#uses=5]
+       %.pn198 = mul double 0.000000e+00, %5           ; <double> [#uses=1]
+       %.pn185 = sub double -0.000000e+00, 0.000000e+00                ; <double> [#uses=1]
+       %.pn147 = sub double -0.000000e+00, 0.000000e+00                ; <double> [#uses=1]
+       %.pn141 = fdiv double 0.000000e+00, %4          ; <double> [#uses=1]
+       %.pn142 = fdiv double 0.000000e+00, %5          ; <double> [#uses=1]
+       %.pn136 = fdiv double 0.000000e+00, 0.000000e+00                ; <double> [#uses=1]
+       %.pn132 = fdiv double 0.000000e+00, %5          ; <double> [#uses=1]
+       %.pn123 = fdiv double 0.000000e+00, 0.000000e+00                ; <double> [#uses=1]
+       %.pn124 = fdiv double 0.000000e+00, %.pn198             ; <double> [#uses=1]
+       %.pn120 = fdiv double 0.000000e+00, 0.000000e+00                ; <double> [#uses=1]
+       %.pn117 = fdiv double 0.000000e+00, %4          ; <double> [#uses=1]
+       %.pn118 = fdiv double %.pn185, %5               ; <double> [#uses=1]
+       %.pn88 = fdiv double %.pn147, %5                ; <double> [#uses=1]
+       %.pn81 = sub double %.pn141, %.pn142            ; <double> [#uses=1]
+       %.pn77 = sub double 0.000000e+00, %.pn136               ; <double> [#uses=1]
+       %.pn75 = sub double 0.000000e+00, %.pn132               ; <double> [#uses=1]
+       %.pn69 = sub double %.pn123, %.pn124            ; <double> [#uses=1]
+       %.pn67 = sub double 0.000000e+00, %.pn120               ; <double> [#uses=1]
+       %.pn56 = sub double %.pn117, %.pn118            ; <double> [#uses=1]
+       %.pn42 = sub double 0.000000e+00, %.pn88                ; <double> [#uses=1]
+       %.pn60 = mul double %.pn81, 0.000000e+00                ; <double> [#uses=1]
+       %.pn57 = add double %.pn77, 0.000000e+00                ; <double> [#uses=1]
+       %.pn58 = mul double %.pn75, %.pn165.in          ; <double> [#uses=1]
+       %.pn32 = add double %.pn69, 0.000000e+00                ; <double> [#uses=1]
+       %.pn33 = mul double %.pn67, %.pn165.in          ; <double> [#uses=1]
+       %.pn17 = sub double 0.000000e+00, %.pn60                ; <double> [#uses=1]
+       %.pn9 = add double %.pn57, %.pn58               ; <double> [#uses=1]
+       %.pn30 = mul double 0.000000e+00, %.pn56                ; <double> [#uses=1]
+       %.pn24 = mul double 0.000000e+00, %.pn42                ; <double> [#uses=1]
+       %.pn1 = add double %.pn32, %.pn33               ; <double> [#uses=1]
+       %.pn28 = sub double %.pn30, 0.000000e+00                ; <double> [#uses=1]
+       %.pn26 = add double %.pn28, 0.000000e+00                ; <double> [#uses=1]
+       %.pn22 = sub double %.pn26, 0.000000e+00                ; <double> [#uses=1]
+       %.pn20 = sub double %.pn24, 0.000000e+00                ; <double> [#uses=1]
+       %.pn18 = add double %.pn22, 0.000000e+00                ; <double> [#uses=1]
+       %.pn16 = add double %.pn20, 0.000000e+00                ; <double> [#uses=1]
+       %.pn14 = sub double %.pn18, 0.000000e+00                ; <double> [#uses=1]
+       %.pn12 = sub double %.pn16, %.pn17              ; <double> [#uses=1]
+       %.pn10 = add double %.pn14, 0.000000e+00                ; <double> [#uses=1]
+       %.pn8 = add double %.pn12, 0.000000e+00         ; <double> [#uses=1]
+       %.pn6 = sub double %.pn10, 0.000000e+00         ; <double> [#uses=1]
+       %.pn4 = sub double %.pn8, %.pn9         ; <double> [#uses=1]
+       %.pn2 = add double %.pn6, 0.000000e+00          ; <double> [#uses=1]
+       %.pn = add double %.pn4, 0.000000e+00           ; <double> [#uses=1]
+       %N1.0 = sub double %.pn2, 0.000000e+00          ; <double> [#uses=2]
+       %D1.0 = sub double %.pn, %.pn1          ; <double> [#uses=2]
+       br i1 %6, label %bb62, label %bb64
+
+bb62:          ; preds = %bb55
+       %7 = mul double 0.000000e+00, %4                ; <double> [#uses=1]
+       %8 = sub double -0.000000e+00, %7               ; <double> [#uses=3]
+       %9 = mul double 0.000000e+00, %5                ; <double> [#uses=1]
+       %10 = sub double -0.000000e+00, %9              ; <double> [#uses=3]
+       %11 = mul double %.pn404, %4            ; <double> [#uses=5]
+       %12 = mul double %.pn402, %5            ; <double> [#uses=5]
+       %13 = mul double 0.000000e+00, -2.000000e+00            ; <double> [#uses=1]
+       %14 = fdiv double 0.000000e+00, %.pn402         ; <double> [#uses=1]
+       %15 = sub double 0.000000e+00, %14              ; <double> [#uses=1]
+       %16 = mul double 0.000000e+00, %15              ; <double> [#uses=1]
+       %17 = add double %13, %16               ; <double> [#uses=1]
+       %18 = mul double %.pn165.in, -2.000000e+00              ; <double> [#uses=5]
+       %19 = mul double %18, 0.000000e+00              ; <double> [#uses=1]
+       %20 = add double %17, %19               ; <double> [#uses=1]
+       %21 = mul double 0.000000e+00, %20              ; <double> [#uses=1]
+       %22 = add double 0.000000e+00, %21              ; <double> [#uses=1]
+       %23 = fdiv double 0.000000e+00, %12             ; <double> [#uses=1]
+       %24 = sub double 0.000000e+00, %23              ; <double> [#uses=0]
+       %25 = mul double %18, 0.000000e+00              ; <double> [#uses=1]
+       %26 = add double 0.000000e+00, %25              ; <double> [#uses=1]
+       %27 = mul double 0.000000e+00, %26              ; <double> [#uses=1]
+       %28 = sub double %22, %27               ; <double> [#uses=1]
+       %29 = mul double %11, %4                ; <double> [#uses=1]
+       %30 = mul double %12, %5                ; <double> [#uses=3]
+       %31 = mul double %.pn165.in, -4.000000e+00              ; <double> [#uses=1]
+       %32 = mul double %.pn165.in, 0x3FF5555555555555         ; <double> [#uses=1]
+       %33 = mul double %32, 0.000000e+00              ; <double> [#uses=2]
+       %34 = add double %28, 0.000000e+00              ; <double> [#uses=1]
+       %35 = sub double -0.000000e+00, 0.000000e+00            ; <double> [#uses=1]
+       %36 = fdiv double %35, %11              ; <double> [#uses=1]
+       %37 = fdiv double 0.000000e+00, %12             ; <double> [#uses=1]
+       %38 = sub double %36, %37               ; <double> [#uses=1]
+       %39 = mul double 0.000000e+00, %38              ; <double> [#uses=1]
+       %40 = add double 0.000000e+00, %39              ; <double> [#uses=1]
+       %41 = add double %40, 0.000000e+00              ; <double> [#uses=1]
+       %42 = add double %41, 0.000000e+00              ; <double> [#uses=1]
+       %43 = mul double %42, 0.000000e+00              ; <double> [#uses=1]
+       %44 = sub double %34, %43               ; <double> [#uses=1]
+       %45 = tail call double @llvm.exp.f64(double %8) nounwind                ; <double> [#uses=1]
+       %46 = sub double -0.000000e+00, %45             ; <double> [#uses=2]
+       %47 = fdiv double %46, 0.000000e+00             ; <double> [#uses=1]
+       %48 = mul double %30, %5                ; <double> [#uses=1]
+       %49 = fdiv double 0.000000e+00, %48             ; <double> [#uses=1]
+       %50 = sub double %47, %49               ; <double> [#uses=1]
+       %51 = mul double %50, -4.000000e+00             ; <double> [#uses=1]
+       %52 = add double %51, 0.000000e+00              ; <double> [#uses=1]
+       %53 = fdiv double %46, %11              ; <double> [#uses=1]
+       %54 = sub double %53, 0.000000e+00              ; <double> [#uses=1]
+       %55 = mul double %31, %54               ; <double> [#uses=1]
+       %56 = add double %52, %55               ; <double> [#uses=1]
+       %57 = add double %56, 0.000000e+00              ; <double> [#uses=1]
+       %58 = add double %44, %57               ; <double> [#uses=1]
+       %59 = sub double %58, 0.000000e+00              ; <double> [#uses=1]
+       %60 = tail call double @llvm.exp.f64(double 0.000000e+00) nounwind              ; <double> [#uses=1]
+       %61 = sub double -0.000000e+00, %60             ; <double> [#uses=1]
+       %62 = fdiv double 0.000000e+00, -6.000000e+00           ; <double> [#uses=1]
+       %63 = fdiv double %61, %5               ; <double> [#uses=1]
+       %64 = sub double 0.000000e+00, %63              ; <double> [#uses=1]
+       %65 = mul double %62, %64               ; <double> [#uses=1]
+       %66 = sub double 0.000000e+00, %65              ; <double> [#uses=1]
+       %67 = sub double -0.000000e+00, 0.000000e+00            ; <double> [#uses=2]
+       %68 = tail call double @llvm.exp.f64(double %10) nounwind               ; <double> [#uses=1]
+       %69 = sub double -0.000000e+00, %68             ; <double> [#uses=2]
+       %70 = fdiv double %67, %.pn404          ; <double> [#uses=1]
+       %71 = fdiv double %69, %.pn402          ; <double> [#uses=1]
+       %72 = sub double %70, %71               ; <double> [#uses=1]
+       %73 = mul double %72, -5.000000e-01             ; <double> [#uses=1]
+       %74 = fdiv double %67, %4               ; <double> [#uses=1]
+       %75 = fdiv double %69, %5               ; <double> [#uses=1]
+       %76 = sub double %74, %75               ; <double> [#uses=1]
+       %77 = mul double %76, 0.000000e+00              ; <double> [#uses=1]
+       %78 = add double %73, %77               ; <double> [#uses=1]
+       %79 = mul double 0.000000e+00, %78              ; <double> [#uses=1]
+       %80 = add double %66, %79               ; <double> [#uses=1]
+       %81 = fdiv double 0.000000e+00, %.pn404         ; <double> [#uses=1]
+       %82 = fdiv double 0.000000e+00, %.pn402         ; <double> [#uses=1]
+       %83 = sub double %81, %82               ; <double> [#uses=1]
+       %84 = mul double %83, -5.000000e-01             ; <double> [#uses=1]
+       %85 = fdiv double 0.000000e+00, %4              ; <double> [#uses=1]
+       %86 = fdiv double 0.000000e+00, %5              ; <double> [#uses=1]
+       %87 = sub double %85, %86               ; <double> [#uses=1]
+       %88 = mul double %87, 0.000000e+00              ; <double> [#uses=1]
+       %89 = add double %84, %88               ; <double> [#uses=1]
+       %90 = mul double 0.000000e+00, %89              ; <double> [#uses=1]
+       %91 = sub double %80, %90               ; <double> [#uses=1]
+       %92 = tail call double @llvm.exp.f64(double %8) nounwind                ; <double> [#uses=1]
+       %93 = sub double -0.000000e+00, %92             ; <double> [#uses=1]
+       %94 = tail call double @llvm.exp.f64(double %10) nounwind               ; <double> [#uses=1]
+       %95 = sub double -0.000000e+00, %94             ; <double> [#uses=3]
+       %96 = fdiv double %95, %.pn402          ; <double> [#uses=1]
+       %97 = sub double 0.000000e+00, %96              ; <double> [#uses=1]
+       %98 = mul double 0.000000e+00, %97              ; <double> [#uses=1]
+       %99 = fdiv double %93, %11              ; <double> [#uses=1]
+       %100 = fdiv double %95, %12             ; <double> [#uses=1]
+       %101 = sub double %99, %100             ; <double> [#uses=1]
+       %102 = sub double %98, %101             ; <double> [#uses=1]
+       %103 = fdiv double %95, %5              ; <double> [#uses=1]
+       %104 = sub double 0.000000e+00, %103            ; <double> [#uses=1]
+       %105 = mul double %18, %104             ; <double> [#uses=1]
+       %106 = add double %102, %105            ; <double> [#uses=1]
+       %107 = mul double %106, %k.4            ; <double> [#uses=1]
+       %108 = add double %91, %107             ; <double> [#uses=1]
+       %109 = sub double %108, 0.000000e+00            ; <double> [#uses=1]
+       %110 = tail call double @llvm.exp.f64(double %8) nounwind               ; <double> [#uses=1]
+       %111 = sub double -0.000000e+00, %110           ; <double> [#uses=2]
+       %112 = tail call double @llvm.exp.f64(double %10) nounwind              ; <double> [#uses=1]
+       %113 = sub double -0.000000e+00, %112           ; <double> [#uses=2]
+       %114 = fdiv double %111, %11            ; <double> [#uses=1]
+       %115 = fdiv double %113, %12            ; <double> [#uses=1]
+       %116 = sub double %114, %115            ; <double> [#uses=1]
+       %117 = mul double 0.000000e+00, %116            ; <double> [#uses=1]
+       %118 = fdiv double %111, %29            ; <double> [#uses=1]
+       %119 = fdiv double %113, %30            ; <double> [#uses=1]
+       %120 = sub double %118, %119            ; <double> [#uses=1]
+       %121 = sub double %117, %120            ; <double> [#uses=1]
+       %122 = mul double %18, 0.000000e+00             ; <double> [#uses=1]
+       %123 = add double %121, %122            ; <double> [#uses=1]
+       %124 = mul double %33, 0.000000e+00             ; <double> [#uses=1]
+       %125 = add double %123, %124            ; <double> [#uses=1]
+       %126 = add double %109, %125            ; <double> [#uses=1]
+       %127 = tail call double @llvm.exp.f64(double 0.000000e+00) nounwind             ; <double> [#uses=1]
+       %128 = sub double -0.000000e+00, %127           ; <double> [#uses=2]
+       %129 = fdiv double %128, %30            ; <double> [#uses=1]
+       %130 = sub double 0.000000e+00, %129            ; <double> [#uses=1]
+       %131 = sub double 0.000000e+00, %130            ; <double> [#uses=1]
+       %132 = fdiv double 0.000000e+00, %.pn404                ; <double> [#uses=1]
+       %133 = sub double %132, 0.000000e+00            ; <double> [#uses=1]
+       %134 = mul double %18, %133             ; <double> [#uses=1]
+       %135 = add double %131, %134            ; <double> [#uses=1]
+       %136 = fdiv double %128, %5             ; <double> [#uses=1]
+       %137 = sub double 0.000000e+00, %136            ; <double> [#uses=1]
+       %138 = mul double %33, %137             ; <double> [#uses=1]
+       %139 = add double %135, %138            ; <double> [#uses=1]
+       %140 = sub double %126, %139            ; <double> [#uses=1]
+       %141 = add double %N1.0, %59            ; <double> [#uses=1]
+       %142 = add double %D1.0, %140           ; <double> [#uses=1]
+       br label %bb64
+
+bb64:          ; preds = %bb62, %bb55
+       %N1.0.pn = phi double [ %141, %bb62 ], [ %N1.0, %bb55 ]         ; <double> [#uses=1]
+       %D1.0.pn = phi double [ %142, %bb62 ], [ %D1.0, %bb55 ]         ; <double> [#uses=1]
+       %x.1 = fdiv double %N1.0.pn, %D1.0.pn           ; <double> [#uses=0]
+       ret void
+}