Ignore DbgInfoIntrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63923 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp
index cbe507cfa99edf91ea6c9d9b6ebefb45db6ad827..f625c13d453b53a7996bd6d614c4bfce3b7d7c36 100644 (file)
--- a/lib/Transforms/Scalar/LoopIndexSplit.cpp
+++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp
@@ -42,6 +42,7 @@
 #define DEBUG_TYPE "loop-index-split"
 
 #include "llvm/Transforms/Scalar.h"
+#include "llvm/IntrinsicInst.h"
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/Analysis/ScalarEvolutionExpander.h"
 #include "llvm/Analysis/Dominators.h"
@@ -1104,7 +1105,8 @@ bool LoopIndexSplit::cleanBlock(BasicBlock *BB) {
     Instruction *I = BI;
 
     if (isa<PHINode>(I) || I == Terminator || I == ExitCondition
-        || I == SplitCondition || IVBasedValues.count(I))
+        || I == SplitCondition || IVBasedValues.count(I) 
+        || isa<DbgInfoIntrinsic>(I))
       continue;
 
     if (I->mayWriteToMemory())

diff --git a/test/Transforms/LoopIndexSplit/SplitValue-2007-08-24-dbg.ll b/test/Transforms/LoopIndexSplit/SplitValue-2007-08-24-dbg.ll
new file mode 100644 (file)
index 0000000..3b237bb
--- /dev/null
+++ b/test/Transforms/LoopIndexSplit/SplitValue-2007-08-24-dbg.ll
@@ -0,0 +1,71 @@
+; Split loop. Save last value. Split value is off by one in this example.
+; RUN: llvm-as < %s | opt -loop-index-split -disable-output -stats |& \
+; RUN: grep "loop-index-split" | count 1
+
+        %llvm.dbg.anchor.type = type { i32, i32 }
+        %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
+
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"              ; 
+
+@.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata"          ; <[4 x i8]*> [#uses=1]
+@.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata"       ; <[6 x i8]*> [#uses=1]
+@.str2 = internal constant [55 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build 00)\00", section "llvm.metadata"             ; <[55 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata"          ; <%llvm.dbg.compile_unit.type*> [#uses=1]
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+
+@k = external global i32               ; <i32*> [#uses=2]
+
+define void @foobar(i32 %a, i32 %b) {
+entry:
+       br label %bb
+
+bb:            ; preds = %cond_next16, %entry
+       %i.01.0 = phi i32 [ 0, %entry ], [ %tmp18, %cond_next16 ]               ; <i32> [#uses=5]
+       %tsum.18.0 = phi i32 [ 42, %entry ], [ %tsum.013.1, %cond_next16 ]              ; <i32> [#uses=3]
+       %tmp1 = icmp sgt i32 %i.01.0, 50                ; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+       br i1 %tmp1, label %cond_true, label %cond_false
+
+cond_true:             ; preds = %bb
+       %tmp4 = tail call i32 @foo( i32 %i.01.0 )               ; <i32> [#uses=1]
+       %tmp6 = add i32 %tmp4, %tsum.18.0               ; <i32> [#uses=2]
+       %tmp914 = load i32* @k, align 4         ; <i32> [#uses=1]
+       %tmp1015 = icmp eq i32 %tmp914, 0               ; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+       br i1 %tmp1015, label %cond_next16, label %cond_true13
+
+cond_false:            ; preds = %bb
+       %tmp8 = tail call i32 @bar( i32 %i.01.0 )               ; <i32> [#uses=0]
+       %tmp9 = load i32* @k, align 4           ; <i32> [#uses=1]
+       %tmp10 = icmp eq i32 %tmp9, 0           ; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+       br i1 %tmp10, label %cond_next16, label %cond_true13
+
+cond_true13:           ; preds = %cond_false, %cond_true
+       %tsum.013.0 = phi i32 [ %tmp6, %cond_true ], [ %tsum.18.0, %cond_false ]                ; <i32> [#uses=1]
+       %tmp15 = tail call i32 @bar( i32 %i.01.0 )              ; <i32> [#uses=0]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+       br label %cond_next16
+
+cond_next16:           ; preds = %cond_false, %cond_true, %cond_true13
+       %tsum.013.1 = phi i32 [ %tsum.013.0, %cond_true13 ], [ %tmp6, %cond_true ], [ %tsum.18.0, %cond_false ]         ; <i32> [#uses=2]
+       %tmp18 = add i32 %i.01.0, 1             ; <i32> [#uses=3]
+       %tmp21 = icmp slt i32 %tmp18, 100               ; <i1> [#uses=1]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+       br i1 %tmp21, label %bb, label %bb24
+
+bb24:          ; preds = %cond_next16
+       %tmp18.lcssa = phi i32 [ %tmp18, %cond_next16 ]         ; <i32> [#uses=1]
+       %tsum.013.1.lcssa = phi i32 [ %tsum.013.1, %cond_next16 ]               ; <i32> [#uses=1]
+       %tmp27 = tail call i32 @t( i32 %tmp18.lcssa, i32 %tsum.013.1.lcssa )            ; <i32> [#uses=0]
+call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+       ret void
+}
+
+declare i32 @foo(i32)
+
+declare i32 @bar(i32)
+
+declare i32 @t(i32, i32)