AU.addPreserved<ScalarEvolution>();
AU.addPreservedID(BreakCriticalEdgesID); // No critical edges added.
AU.addPreserved<DominanceFrontier>();
- AU.addPreservedID(LCSSAID);
}
/// verifyAnalysis() - Verify LoopSimplifyForm's guarantees.
PHINode *PN;
for (BasicBlock::iterator I = L->getHeader()->begin();
(PN = dyn_cast<PHINode>(I++)); )
- if (Value *V = SimplifyInstruction(PN, 0, DT))
- if (LI->replacementPreservesLCSSAForm(PN, V)) {
- if (AA) AA->deleteValue(PN);
- PN->replaceAllUsesWith(V);
- PN->eraseFromParent();
- }
+ if (Value *V = SimplifyInstruction(PN, 0, DT)) {
+ if (AA) AA->deleteValue(PN);
+ PN->replaceAllUsesWith(V);
+ PN->eraseFromParent();
+ }
// If this loop has multiple exits and the exits all go to the same
// block, attempt to merge the exits. This helps several passes, such
for (BasicBlock::iterator I = L->getHeader()->begin(); isa<PHINode>(I); ) {
PHINode *PN = cast<PHINode>(I);
++I;
- if (Value *V = SimplifyInstruction(PN, 0, DT))
- if (LI->replacementPreservesLCSSAForm(PN, V)) {
- // This is a degenerate PHI already, don't modify it!
- PN->replaceAllUsesWith(V);
- if (AA) AA->deleteValue(PN);
- PN->eraseFromParent();
- continue;
- }
+ if (Value *V = SimplifyInstruction(PN, 0, DT)) {
+ // This is a degenerate PHI already, don't modify it!
+ PN->replaceAllUsesWith(V);
+ if (AA) AA->deleteValue(PN);
+ PN->eraseFromParent();
+ continue;
+ }
// Scan this PHI node looking for a use of the PHI node by itself.
for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i)
--- /dev/null
+; RUN: opt < %s -loopsimplify -S
+; PR8702
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+target triple = "x86_64-unknown-freebsd9.0"
+
+declare void @foo(i32 %x)
+
+define fastcc void @inm_merge() nounwind {
+entry:
+ br label %for.cond
+
+for.cond: ; preds = %while.cond36.i, %entry
+ br i1 undef, label %do.body, label %for.body
+
+for.body: ; preds = %for.cond
+ br i1 undef, label %while.cond36.i, label %if.end44
+
+if.end44: ; preds = %for.body
+ %call49 = call fastcc i32 @inm_get_source()
+ br i1 undef, label %if.end54, label %for.cond64
+
+if.end54: ; preds = %if.end44
+ br label %while.cond36.i
+
+while.cond36.i: ; preds = %if.end54, %for.body
+ br label %for.cond
+
+for.cond64: ; preds = %if.end88, %for.cond64, %if.end44
+ %error.161 = phi i32 [ %error.161, %for.cond64 ], [ %error.161, %if.end88 ], [ %call49, %if.end44 ]
+ call void @foo(i32 %error.161)
+ br i1 undef, label %for.cond64, label %if.end88
+
+if.end88: ; preds = %for.cond64
+ br i1 undef, label %for.cond64, label %if.end98
+
+if.end98: ; preds = %if.end88
+ unreachable
+
+do.body: ; preds = %for.cond
+ unreachable
+}
+
+declare fastcc i32 @inm_get_source() nounwind