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Make sure we don't emit instructions before a landingpad instruction.
PR14782 llvm-svn: 171846
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@ -124,7 +124,12 @@ AllocaInst *llvm::DemotePHIToStack(PHINode *P, Instruction *AllocaPoint) {
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}
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// Insert a load in place of the PHI and replace all uses.
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Value *V = new LoadInst(Slot, P->getName()+".reload", P);
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BasicBlock::iterator InsertPt = P;
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for (; isa<PHINode>(InsertPt) || isa<LandingPadInst>(InsertPt); ++InsertPt)
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/* empty */; // Don't insert before PHI nodes or landingpad instrs.
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Value *V = new LoadInst(Slot, P->getName()+".reload", InsertPt);
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P->replaceAllUsesWith(V);
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// Delete PHI.
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88
test/Transforms/Reg2Mem/crash.ll
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88
test/Transforms/Reg2Mem/crash.ll
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@ -0,0 +1,88 @@
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; RUN: opt -reg2mem -disable-output < %s
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; PR14782
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declare void @f1()
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declare i32 @__gxx_personality_sj0(...)
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declare void @f2()
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declare void @f3()
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declare void @f4_()
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declare void @_Z12xxxdtsP10xxxpq()
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define hidden void @_ZN12xxxyzIi9xxxwLi29ELi0EE4f3NewES0_i() ssp align 2 {
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bb:
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invoke void @f4_()
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to label %bb1 unwind label %.thread
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.thread: ; preds = %bb
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%tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*)
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cleanup
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br label %bb13
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bb1: ; preds = %bb
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invoke void @f1()
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to label %.noexc unwind label %bb10
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.noexc: ; preds = %bb1
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invoke void @f4_()
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to label %bb6 unwind label %bb2
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bb2: ; preds = %.noexc
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%tmp3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*)
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cleanup
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invoke void @f3()
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to label %.body unwind label %bb4
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bb4: ; preds = %bb2
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%tmp5 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*)
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catch i8* null
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unreachable
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bb6: ; preds = %.noexc
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invoke void @_Z12xxxdtsP10xxxpq()
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to label %_ZN6xxxdIN12xxxyzIi9xxxwLi29ELi0EE4fr1jS3_.exit unwind label %bb10
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_ZN6xxxdIN12xxxyzIi9xxxwLi29ELi0EE4fr1jS3_.exit: ; preds = %bb6
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invoke void @f2()
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to label %bb7 unwind label %bb8
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bb7: ; preds = %_ZN6xxxdIN12xxxyzIi9xxxwLi29ELi0EE4fr1jS3_.exit
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ret void
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bb8: ; preds = %_ZN6xxxdIN12xxxyzIi9xxxwLi29ELi0EE4fr1jS3_.exit
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%tmp9 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*)
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cleanup
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br label %_ZN10xxxpqdlev.exit
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bb10: ; preds = %bb6, %bb1
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%.1 = phi i1 [ true, %bb1 ], [ false, %bb6 ]
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%tmp11 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*)
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cleanup
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br label %.body
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.body: ; preds = %bb10, %bb2
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%.1.lpad-body = phi i1 [ %.1, %bb10 ], [ true, %bb2 ]
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invoke void @f2()
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to label %bb12 unwind label %bb14
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bb12: ; preds = %.body
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br i1 %.1.lpad-body, label %bb13, label %_ZN10xxxpqdlev.exit
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bb13: ; preds = %bb12, %.thread
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invoke void @xxx_MemFree()
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to label %_ZN10xxxpqdlev.exit unwind label %bb14
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_ZN10xxxpqdlev.exit: ; preds = %bb13, %bb12, %bb8
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resume { i8*, i32 } undef
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bb14: ; preds = %bb13, %.body
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%tmp15 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*)
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catch i8* null
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unreachable
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}
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declare void @xxx_MemFree()
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1
test/Transforms/Reg2Mem/lit.local.cfg
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1
test/Transforms/Reg2Mem/lit.local.cfg
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@ -0,0 +1 @@
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config.suffixes = ['.ll', '.c', '.cpp']
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