Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/Transforms/LICM/2003-02-26-LoopExitNotDominated.ll

@@ -0,0 +1,18 @@
+; RUN: opt < %s -basicaa -licm -disable-output
+
+;%MoveArray = external global [64 x ulong]
+
+define void @InitMoveArray() {
+bb3:
+	%X = alloca [2 x i64]		; <[2 x i64]*> [#uses=1]
+	br i1 false, label %bb13, label %bb4
+bb4:		; preds = %bb3
+	%reg3011 = getelementptr [2 x i64], [2 x i64]* %X, i64 0, i64 0		; <i64*> [#uses=1]
+	br label %bb8
+bb8:		; preds = %bb8, %bb4
+	store i64 0, i64* %reg3011
+	br i1 false, label %bb8, label %bb13
+bb13:		; preds = %bb8, %bb3
+	ret void
+}
+

external/llvm-project/llvm/test/Transforms/LICM/2003-02-27-NestedLoopExitBlocks.ll

@@ -0,0 +1,17 @@
+; Exit blocks need to be updated for all nested loops...
+
+; RUN: opt < %s -loop-simplify
+
+define i32 @yyparse() {
+bb0:
+	br i1 false, label %UnifiedExitNode, label %bb19
+bb19:		; preds = %bb28, %bb0
+	br i1 false, label %bb28, label %UnifiedExitNode
+bb28:		; preds = %bb32, %bb19
+	br i1 false, label %bb32, label %bb19
+bb32:		; preds = %bb28
+	br i1 false, label %UnifiedExitNode, label %bb28
+UnifiedExitNode:		; preds = %bb32, %bb19, %bb0
+	ret i32 0
+}
+

external/llvm-project/llvm/test/Transforms/LICM/2003-02-27-PreheaderExitNodeUpdate.ll

@@ -0,0 +1,16 @@
+; This testcase fails because preheader insertion is not updating exit node 
+; information for loops.
+
+; RUN: opt < %s -licm
+
+define i32 @main(i32 %argc, i8** %argv) {
+bb0:
+	br i1 false, label %bb7, label %bb5
+bb5:		; preds = %bb5, %bb0
+	br i1 false, label %bb5, label %bb7
+bb7:		; preds = %bb7, %bb5, %bb0
+	br i1 false, label %bb7, label %bb10
+bb10:		; preds = %bb7
+	ret i32 0
+}
+

external/llvm-project/llvm/test/Transforms/LICM/2003-02-27-PreheaderProblem.ll

@@ -0,0 +1,24 @@
+; Here we have a case where there are two loops and LICM is hoisting an 
+; instruction from one loop into the other loop!  This is obviously bad and 
+; happens because preheader insertion doesn't insert a preheader for this
+; case... bad.
+
+; RUN: opt < %s -licm -loop-deletion -simplifycfg -S | \
+; RUN:   not grep "br "
+
+define i32 @main(i32 %argc) {
+; <label>:0
+	br label %bb5
+bb5:		; preds = %bb5, %0
+	%I = phi i32 [ 0, %0 ], [ %I2, %bb5 ]		; <i32> [#uses=1]
+	%I2 = add i32 %I, 1		; <i32> [#uses=2]
+	%c = icmp eq i32 %I2, 10		; <i1> [#uses=1]
+	br i1 %c, label %bb5, label %bb8
+bb8:		; preds = %bb8, %bb5
+	%cann-indvar = phi i32 [ 0, %bb8 ], [ 0, %bb5 ]		; <i32> [#uses=0]
+	%X = add i32 %argc, %argc		; <i32> [#uses=1]
+	br i1 false, label %bb8, label %bb10
+bb10:		; preds = %bb8
+	ret i32 %X
+}
+

external/llvm-project/llvm/test/Transforms/LICM/2003-02-27-StoreSinkPHIs.ll

@@ -0,0 +1,15 @@
+; LICM is adding stores before phi nodes.  bad.
+
+; RUN: opt < %s -licm
+
+define i1 @test(i1 %c) {
+; <label>:0
+	br i1 %c, label %Loop, label %Out
+Loop:		; preds = %Loop, %0
+	store i32 0, i32* null
+	br i1 %c, label %Loop, label %Out
+Out:		; preds = %Loop, %0
+	%X = phi i1 [ %c, %0 ], [ true, %Loop ]		; <i1> [#uses=1]
+	ret i1 %X
+}
+

external/llvm-project/llvm/test/Transforms/LICM/2003-02-28-PromoteDifferentType.ll

@@ -0,0 +1,15 @@
+; Test that hoisting is disabled for pointers of different types...
+;
+; RUN: opt < %s -licm
+
+define void @test(i32* %P) {
+	br label %Loop
+Loop:		; preds = %Loop, %0
+	store i32 5, i32* %P
+	%P2 = bitcast i32* %P to i8*		; <i8*> [#uses=1]
+	store i8 4, i8* %P2
+	br i1 true, label %Loop, label %Out
+Out:		; preds = %Loop
+	ret void
+}
+

external/llvm-project/llvm/test/Transforms/LICM/2003-05-02-LoadHoist.ll

@@ -0,0 +1,23 @@
+; This testcase tests for a problem where LICM hoists loads out of a loop 
+; despite the fact that calls to unknown functions may modify what is being 
+; loaded from.  Basically if the load gets hoisted, the subtract gets turned
+; into a constant zero.
+;
+; RUN: opt < %s -licm -gvn -instcombine -S | grep load
+
+@X = global i32 7		; <i32*> [#uses=2]
+
+declare void @foo()
+
+define i32 @test(i1 %c) {
+	%A = load i32, i32* @X		; <i32> [#uses=1]
+	br label %Loop
+Loop:		; preds = %Loop, %0
+	call void @foo( )
+        ;; Should not hoist this load!
+	%B = load i32, i32* @X		; <i32> [#uses=1]
+	br i1 %c, label %Loop, label %Out
+Out:		; preds = %Loop
+	%C = sub i32 %A, %B		; <i32> [#uses=1]
+	ret i32 %C
+}

external/llvm-project/llvm/test/Transforms/LICM/2003-12-11-SinkingToPHI.ll

@@ -0,0 +1,16 @@
+; RUN: opt < %s -licm | lli -force-interpreter
+
+define i32 @main() {
+entry:
+	br label %Loop
+Loop:		; preds = %LoopCont, %entry
+	br i1 true, label %LoopCont, label %Out
+LoopCont:		; preds = %Loop
+	%X = add i32 1, 0		; <i32> [#uses=1]
+	br i1 true, label %Out, label %Loop
+Out:		; preds = %LoopCont, %Loop
+	%V = phi i32 [ 2, %Loop ], [ %X, %LoopCont ]		; <i32> [#uses=1]
+	%V2 = sub i32 %V, 1		; <i32> [#uses=1]
+	ret i32 %V2
+}
+

external/llvm-project/llvm/test/Transforms/LICM/2004-09-14-AliasAnalysisInvalidate.ll

@@ -0,0 +1,19 @@
+; RUN: opt < %s -globals-aa -licm -disable-output
+
+@PL_regcomp_parse = internal global i8* null		; <i8**> [#uses=2]
+
+define void @test() {
+	br label %Outer
+Outer:		; preds = %Next, %0
+	br label %Inner
+Inner:		; preds = %Inner, %Outer
+	%tmp.114.i.i.i = load i8*, i8** @PL_regcomp_parse		; <i8*> [#uses=1]
+	%tmp.115.i.i.i = load i8, i8* %tmp.114.i.i.i		; <i8> [#uses=0]
+	store i8* null, i8** @PL_regcomp_parse
+	br i1 false, label %Inner, label %Next
+Next:		; preds = %Inner
+	br i1 false, label %Outer, label %Exit
+Exit:		; preds = %Next
+	ret void
+}
+

external/llvm-project/llvm/test/Transforms/LICM/2004-11-17-UndefIndexCrash.ll

@@ -0,0 +1,20 @@
+; RUN: opt < %s -licm -disable-output
+	%struct.roadlet = type { i8*, %struct.vehicle*, [8 x %struct.roadlet*], [8 x %struct.roadlet* (%struct.roadlet*, %struct.vehicle*, i32)*] }
+	%struct.vehicle = type { %struct.roadlet*, i8*, i32, i32, %union.._631., i32 }
+	%union.._631. = type { i32 }
+
+declare %struct.roadlet* @_Z11return_nullP7roadletP7vehicle9direction(%struct.roadlet*, %struct.vehicle*, i32)
+
+declare %struct.roadlet* @_Z14lane_switch_okP7roadletP7vehicle9direction(%struct.roadlet*, %struct.vehicle*, i32)
+
+define void @main() {
+__main.entry:
+	br label %invoke_cont.3
+invoke_cont.3:		; preds = %invoke_cont.3, %__main.entry
+	%tmp.34.i.i502.7 = getelementptr %struct.roadlet, %struct.roadlet* null, i32 0, i32 3, i32 7		; <%struct.roadlet* (%struct.roadlet*, %struct.vehicle*, i32)**> [#uses=1]
+	store %struct.roadlet* (%struct.roadlet*, %struct.vehicle*, i32)* @_Z11return_nullP7roadletP7vehicle9direction, %struct.roadlet* (%struct.roadlet*, %struct.vehicle*, i32)** %tmp.34.i.i502.7
+	store %struct.roadlet* (%struct.roadlet*, %struct.vehicle*, i32)* @_Z14lane_switch_okP7roadletP7vehicle9direction, %struct.roadlet* (%struct.roadlet*, %struct.vehicle*, i32)** null
+	%tmp.4.i.i339 = getelementptr %struct.roadlet, %struct.roadlet* null, i32 0, i32 3, i32 undef		; <%struct.roadlet* (%struct.roadlet*, %struct.vehicle*, i32)**> [#uses=1]
+	store %struct.roadlet* (%struct.roadlet*, %struct.vehicle*, i32)* @_Z11return_nullP7roadletP7vehicle9direction, %struct.roadlet* (%struct.roadlet*, %struct.vehicle*, i32)** %tmp.4.i.i339
+	br label %invoke_cont.3
+}

external/llvm-project/llvm/test/Transforms/LICM/2006-09-12-DeadUserOfSunkInstr.ll

@@ -0,0 +1,148 @@
+; RUN: opt < %s -licm -disable-output
+; PR908
+; END.
+
+	%struct.alloc_chain = type { i8*, %struct.alloc_chain* }
+	%struct.oggpack_buffer = type { i32, i32, i8*, i8*, i32 }
+	%struct.vorbis_block = type { float**, %struct.oggpack_buffer, i32, i32, i32, i32, i32, i32, i64, i64, %struct.vorbis_dsp_state*, i8*, i32, i32, i32, %struct.alloc_chain*, i32, i32, i32, i32, i8* }
+	%struct.vorbis_dsp_state = type { i32, %struct.vorbis_info*, float**, float**, i32, i32, i32, i32, i32, i32, i32, i32, i32, i64, i64, i64, i64, i64, i64, i8* }
+	%struct.vorbis_info = type { i32, i32, i32, i32, i32, i32, i32, i8* }
+
+define fastcc void @_01forward() {
+entry:
+	br i1 false, label %bb222.preheader, label %bb241
+cond_true67:		; preds = %cond_true87
+	br label %cond_next80
+cond_next80:		; preds = %cond_true87, %cond_true67
+	br label %bb83
+bb83.preheader:		; preds = %cond_true226
+	br i1 false, label %bb83.us.preheader, label %bb83.preheader1
+bb83.us.preheader:		; preds = %bb83.preheader
+	br label %bb83.us
+bb83.us:		; preds = %cond_next80.us, %bb83.us.preheader
+	br i1 false, label %cond_true87.us, label %cond_next92.loopexit2
+cond_next80.us:		; preds = %bb59.loopexit.us, %cond_true67.us
+	br label %bb83.us
+cond_true67.us:		; preds = %bb59.loopexit.us
+	br label %cond_next80.us
+cond_next.us:		; preds = %cond_true56.us, %cond_true38.us
+	br i1 false, label %cond_true56.us, label %bb59.loopexit.us
+cond_true38.us:		; preds = %cond_true56.us
+	br label %cond_next.us
+cond_true56.us:		; preds = %cond_true87.us, %cond_next.us
+	br i1 false, label %cond_true38.us, label %cond_next.us
+cond_true87.us:		; preds = %bb83.us
+	br label %cond_true56.us
+bb59.loopexit.us:		; preds = %cond_next.us
+	br i1 false, label %cond_true67.us, label %cond_next80.us
+bb83.preheader1:		; preds = %bb83.preheader
+	br label %bb83
+bb83:		; preds = %bb83.preheader1, %cond_next80
+	br i1 false, label %cond_next92.loopexit, label %cond_true87
+cond_true87:		; preds = %bb83
+	br i1 false, label %cond_true67, label %cond_next80
+cond_next92.loopexit:		; preds = %bb83
+	br label %cond_next92
+cond_next92.loopexit2:		; preds = %bb83.us
+	br label %cond_next92
+cond_next92:		; preds = %cond_true226, %cond_next92.loopexit2, %cond_next92.loopexit
+	br i1 false, label %cond_true218.loopexit, label %bb222
+cond_true139:		; preds = %cond_true202
+	br i1 false, label %cond_next195, label %cond_true155
+cond_true155:		; preds = %cond_true139
+	br i1 false, label %cond_true249.i.preheader, label %_encodepart.exit
+cond_true.i:		; preds = %cond_true115.i
+	br i1 false, label %bb60.i.preheader, label %cond_next97.i
+bb60.i.preheader:		; preds = %cond_true.i
+	br label %bb60.i
+bb60.i:		; preds = %cond_true63.i, %bb60.i.preheader
+	br i1 false, label %cond_true63.i, label %cond_next97.i.loopexit
+cond_true63.i:		; preds = %bb60.i
+	br i1 false, label %bb60.i, label %cond_next97.i.loopexit
+bb86.i.preheader:		; preds = %cond_true115.i
+	br label %bb86.i
+bb86.i:		; preds = %cond_true93.i, %bb86.i.preheader
+	br i1 false, label %cond_true93.i, label %cond_next97.i.loopexit3
+cond_true93.i:		; preds = %bb86.i
+	br i1 false, label %cond_next97.i.loopexit3, label %bb86.i
+cond_next97.i.loopexit:		; preds = %cond_true63.i, %bb60.i
+	br label %cond_next97.i
+cond_next97.i.loopexit3:		; preds = %cond_true93.i, %bb86.i
+	br label %cond_next97.i
+cond_next97.i:		; preds = %cond_next97.i.loopexit3, %cond_next97.i.loopexit, %cond_true.i
+	br i1 false, label %bb118.i.loopexit, label %cond_true115.i
+cond_true115.i.preheader:		; preds = %cond_true249.i
+	br label %cond_true115.i
+cond_true115.i:		; preds = %cond_true115.i.preheader, %cond_next97.i
+	br i1 false, label %cond_true.i, label %bb86.i.preheader
+bb118.i.loopexit:		; preds = %cond_next97.i
+	br label %bb118.i
+bb118.i:		; preds = %cond_true249.i, %bb118.i.loopexit
+	br i1 false, label %cond_next204.i, label %cond_true128.i
+cond_true128.i:		; preds = %bb118.i
+	br i1 false, label %cond_true199.i.preheader, label %cond_next204.i
+cond_true199.i.preheader:		; preds = %cond_true128.i
+	br label %cond_true199.i
+cond_true199.i.us:		; No predecessors!
+	br i1 false, label %cond_true167.i.us, label %cond_next187.i.us
+cond_next187.i.us:		; preds = %bb170.i.loopexit.us, %bb170.i.us.cond_next187.i.us_crit_edge, %cond_true199.i.us
+	unreachable
+bb170.i.us.cond_next187.i.us_crit_edge:		; preds = %bb170.i.loopexit.us
+	br label %cond_next187.i.us
+cond_true167.i.us:		; preds = %cond_true167.i.us, %cond_true199.i.us
+	br i1 false, label %cond_true167.i.us, label %bb170.i.loopexit.us
+bb170.i.loopexit.us:		; preds = %cond_true167.i.us
+	br i1 false, label %cond_next187.i.us, label %bb170.i.us.cond_next187.i.us_crit_edge
+cond_true199.i:		; preds = %cond_true199.i, %cond_true199.i.preheader
+	br i1 false, label %cond_next204.i.loopexit, label %cond_true199.i
+cond_next204.i.loopexit:		; preds = %cond_true199.i
+	br label %cond_next204.i
+cond_next204.i:		; preds = %cond_next204.i.loopexit, %cond_true128.i, %bb118.i
+	br label %bb233.i
+cond_true230.i:		; No predecessors!
+	%exitcond155 = icmp eq i32 0, %tmp16.i		; <i1> [#uses=0]
+	unreachable
+bb233.i:		; preds = %cond_next204.i
+	br i1 false, label %_encodepart.exit.loopexit, label %cond_true249.i
+cond_true249.i.preheader:		; preds = %cond_true155
+	br label %cond_true249.i
+cond_true249.i:		; preds = %cond_true249.i.preheader, %bb233.i
+	%tmp16.i = bitcast i32 0 to i32		; <i32> [#uses=1]
+	br i1 false, label %cond_true115.i.preheader, label %bb118.i
+_encodepart.exit.loopexit:		; preds = %bb233.i
+	br label %_encodepart.exit
+_encodepart.exit:		; preds = %_encodepart.exit.loopexit, %cond_true155
+	br label %cond_next195
+cond_next195:		; preds = %cond_true202, %_encodepart.exit, %cond_true139
+	br i1 false, label %bb205.loopexit, label %cond_true202
+cond_true202.preheader:		; preds = %cond_true218
+	br label %cond_true202
+cond_true202:		; preds = %cond_true202.preheader, %cond_next195
+	br i1 false, label %cond_next195, label %cond_true139
+bb205.loopexit:		; preds = %cond_next195
+	br label %bb205
+bb205:		; preds = %cond_true218, %bb205.loopexit
+	br i1 false, label %cond_true218, label %bb222.outer105.loopexit
+cond_true218.loopexit:		; preds = %cond_next92
+	br label %cond_true218
+cond_true218:		; preds = %cond_true218.loopexit, %bb205
+	br i1 false, label %cond_true202.preheader, label %bb205
+bb222.preheader:		; preds = %entry
+	br label %bb222.outer
+bb222.outer:		; preds = %bb229, %bb222.preheader
+	br label %bb222.outer105
+bb222.outer105.loopexit:		; preds = %bb205
+	br label %bb222.outer105
+bb222.outer105:		; preds = %bb222.outer105.loopexit, %bb222.outer
+	br label %bb222
+bb222:		; preds = %bb222.outer105, %cond_next92
+	br i1 false, label %cond_true226, label %bb229
+cond_true226:		; preds = %bb222
+	br i1 false, label %bb83.preheader, label %cond_next92
+bb229:		; preds = %bb222
+	br i1 false, label %bb222.outer, label %bb241.loopexit
+bb241.loopexit:		; preds = %bb229
+	br label %bb241
+bb241:		; preds = %bb241.loopexit, %entry
+	ret void
+}

external/llvm-project/llvm/test/Transforms/LICM/2007-05-22-VolatileSink.ll

@@ -0,0 +1,56 @@
+; RUN: opt < %s -licm -S | grep "store volatile"
+; PR1435
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
+target triple = "i686-apple-darwin8"
+
+define void @Transpose(i32* %DataIn, i32* %DataOut) {
+entry:
+	%buffer = alloca [64 x i32], align 16		; <[64 x i32]*> [#uses=2]
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	br label %bb6
+
+bb:		; preds = %bb6
+	%tmp2 = load volatile i32, i32* %DataIn		; <i32> [#uses=1]
+	%tmp3 = getelementptr [64 x i32], [64 x i32]* %buffer, i32 0, i32 %i.0		; <i32*> [#uses=1]
+	store i32 %tmp2, i32* %tmp3
+	%tmp5 = add i32 %i.0, 1		; <i32> [#uses=1]
+	br label %bb6
+
+bb6:		; preds = %bb, %entry
+	%i.0 = phi i32 [ 0, %entry ], [ %tmp5, %bb ]		; <i32> [#uses=3]
+	%tmp8 = icmp sle i32 %i.0, 63		; <i1> [#uses=1]
+	%tmp89 = zext i1 %tmp8 to i8		; <i8> [#uses=1]
+	%toBool = icmp ne i8 %tmp89, 0		; <i1> [#uses=1]
+	br i1 %toBool, label %bb, label %bb30
+
+bb12:		; preds = %bb22
+	%tmp14 = mul i32 %j.1, 8		; <i32> [#uses=1]
+	%tmp16 = add i32 %tmp14, %i.1		; <i32> [#uses=1]
+	%tmp17 = getelementptr [64 x i32], [64 x i32]* %buffer, i32 0, i32 %tmp16		; <i32*> [#uses=1]
+	%tmp18 = load i32, i32* %tmp17		; <i32> [#uses=1]
+	store volatile i32 %tmp18, i32* %DataOut
+	%tmp21 = add i32 %j.1, 1		; <i32> [#uses=1]
+	br label %bb22
+
+bb22:		; preds = %bb30, %bb12
+	%j.1 = phi i32 [ %tmp21, %bb12 ], [ 0, %bb30 ]		; <i32> [#uses=4]
+	%tmp24 = icmp sle i32 %j.1, 7		; <i1> [#uses=1]
+	%tmp2425 = zext i1 %tmp24 to i8		; <i8> [#uses=1]
+	%toBool26 = icmp ne i8 %tmp2425, 0		; <i1> [#uses=1]
+	br i1 %toBool26, label %bb12, label %bb27
+
+bb27:		; preds = %bb22
+	%tmp29 = add i32 %i.1, 1		; <i32> [#uses=1]
+	br label %bb30
+
+bb30:		; preds = %bb27, %bb6
+	%j.0 = phi i32 [ %j.1, %bb27 ], [ undef, %bb6 ]		; <i32> [#uses=0]
+	%i.1 = phi i32 [ %tmp29, %bb27 ], [ 0, %bb6 ]		; <i32> [#uses=3]
+	%tmp32 = icmp sle i32 %i.1, 7		; <i1> [#uses=1]
+	%tmp3233 = zext i1 %tmp32 to i8		; <i8> [#uses=1]
+	%toBool34 = icmp ne i8 %tmp3233, 0		; <i1> [#uses=1]
+	br i1 %toBool34, label %bb22, label %return
+
+return:		; preds = %bb30
+	ret void
+}

external/llvm-project/llvm/test/Transforms/LICM/2007-07-30-AliasSet.ll

@@ -0,0 +1,39 @@
+; RUN: opt < %s -licm -loop-unswitch -disable-output
+	%struct.III_scalefac_t = type { [22 x i32], [13 x [3 x i32]] }
+	%struct.gr_info = type { i32, i32, i32, i32, i32, i32, i32, i32, [3 x i32], [3 x i32], i32, i32, i32, i32, i32, i32, i32, i32, i32, i32*, [4 x i32] }
+
+define i32 @scale_bitcount_lsf(%struct.III_scalefac_t* %scalefac, %struct.gr_info* %cod_info) {
+entry:
+	br i1 false, label %bb28, label %bb133.preheader
+
+bb133.preheader:		; preds = %entry
+	ret i32 0
+
+bb28:		; preds = %entry
+	br i1 false, label %bb63.outer, label %bb79
+
+bb63.outer:		; preds = %bb73, %bb28
+	br i1 false, label %bb35, label %bb73
+
+bb35:		; preds = %cond_next60, %bb63.outer
+	%window.34 = phi i32 [ %tmp62, %cond_next60 ], [ 0, %bb63.outer ]		; <i32> [#uses=1]
+	%tmp44 = getelementptr [4 x i32], [4 x i32]* null, i32 0, i32 0		; <i32*> [#uses=1]
+	%tmp46 = load i32, i32* %tmp44, align 4		; <i32> [#uses=0]
+	br i1 false, label %cond_true50, label %cond_next60
+
+cond_true50:		; preds = %bb35
+	%tmp59 = getelementptr [4 x i32], [4 x i32]* null, i32 0, i32 0		; <i32*> [#uses=1]
+	store i32 0, i32* %tmp59, align 4
+	br label %cond_next60
+
+cond_next60:		; preds = %cond_true50, %bb35
+	%tmp62 = add i32 %window.34, 1		; <i32> [#uses=1]
+	br i1 false, label %bb35, label %bb73
+
+bb73:		; preds = %cond_next60, %bb63.outer
+	%tmp76 = icmp slt i32 0, 0		; <i1> [#uses=1]
+	br i1 %tmp76, label %bb63.outer, label %bb79
+
+bb79:		; preds = %bb73, %bb28
+	ret i32 0
+}

external/llvm-project/llvm/test/Transforms/LICM/2007-09-17-PromoteValue.ll

@@ -0,0 +1,61 @@
+; ModuleID = 'PR1657.bc'
+; Do not promote getelementptr because it may exposes load from a null pointer 
+; and store from a null pointer  which are covered by 
+; icmp eq %struct.decision* null, null condition.
+; RUN: opt < %s -licm -S | not grep promoted
+	%struct.decision = type { i8, %struct.decision* }
+
+define i32 @main() {
+entry:
+	br label %blah.i
+
+blah.i:		; preds = %cond_true.i, %entry
+	%tmp3.i = icmp eq %struct.decision* null, null		; <i1> [#uses=1]
+	br i1 %tmp3.i, label %clear_modes.exit, label %cond_true.i
+
+cond_true.i:		; preds = %blah.i
+	%tmp1.i = getelementptr %struct.decision, %struct.decision* null, i32 0, i32 0		; <i8*> [#uses=1]
+	store i8 0, i8* %tmp1.i
+	br label %blah.i
+
+clear_modes.exit:		; preds = %blah.i
+	call void @exit( i32 0 )
+	unreachable
+}
+
+define i32 @f(i8* %ptr) {
+entry:
+        br label %loop.head
+
+loop.head:              ; preds = %cond.true, %entry
+        %x = phi i8* [ %ptr, %entry ], [ %ptr.i, %cond.true ]           ; <i8*> [#uses=1]
+        %tmp3.i = icmp ne i8* %ptr, %x          ; <i1> [#uses=1]
+        br i1 %tmp3.i, label %cond.true, label %exit
+
+cond.true:              ; preds = %loop.head
+        %ptr.i = getelementptr i8, i8* %ptr, i32 0          ; <i8*> [#uses=2]
+        store i8 0, i8* %ptr.i
+        br label %loop.head
+
+exit:           ; preds = %loop.head
+        ret i32 0
+}
+
+define i32 @f2(i8* %p, i8* %q) {
+entry:
+        br label %loop.head
+
+loop.head:              ; preds = %cond.true, %entry
+        %tmp3.i = icmp eq i8* null, %q            ; <i1> [#uses=1]
+        br i1 %tmp3.i, label %exit, label %cond.true
+
+cond.true:              ; preds = %loop.head
+        %ptr.i = getelementptr i8, i8* %p, i32 0          ; <i8*> [#uses=2]
+        store i8 0, i8* %ptr.i
+        br label %loop.head
+
+exit:           ; preds = %loop.head
+        ret i32 0
+}
+
+declare void @exit(i32)

external/llvm-project/llvm/test/Transforms/LICM/2007-09-24-PromoteNullValue.ll

@@ -0,0 +1,46 @@
+; Do not promote null value because it may be unsafe to do so.
+; RUN: opt < %s -licm -S | not grep promoted
+
+define i32 @f(i32 %foo, i32 %bar, i32 %com) {
+entry:
+	%tmp2 = icmp eq i32 %foo, 0		; <i1> [#uses=1]
+	br i1 %tmp2, label %cond_next, label %cond_true
+
+cond_true:		; preds = %entry
+	br label %return
+
+cond_next:		; preds = %entry
+	br label %bb
+
+bb:		; preds = %bb15, %cond_next
+	switch i32 %bar, label %bb15 [
+		 i32 1, label %bb6
+	]
+
+bb6:		; preds = %bb
+	%tmp8 = icmp eq i32 %com, 0		; <i1> [#uses=1]
+	br i1 %tmp8, label %cond_next14, label %cond_true11
+
+cond_true11:		; preds = %bb6
+	br label %return
+
+cond_next14:		; preds = %bb6
+	store i8 0, i8* null
+	br label %bb15
+
+bb15:		; preds = %cond_next14, %bb
+	br label %bb
+
+return:		; preds = %cond_true11, %cond_true
+	%storemerge = phi i32 [ 0, %cond_true ], [ undef, %cond_true11 ]		; <i32> [#uses=1]
+	ret i32 %storemerge
+}
+
+define i32 @kdMain() {
+entry:
+	%tmp1 = call i32 @f( i32 0, i32 1, i32 1 )		; <i32> [#uses=0]
+	call void @exit( i32 0 )
+	unreachable
+}
+
+declare void @exit(i32)

external/llvm-project/llvm/test/Transforms/LICM/2007-10-01-PromoteSafeValue.ll

@@ -0,0 +1,23 @@
+; RUN: opt < %s -licm -S | FileCheck %s
+; Promote value if at least one use is safe
+
+
+define i32 @f2(i32* %p, i8* %q) {
+entry:
+        br label %loop.head
+
+loop.head:              ; preds = %cond.true, %entry
+        store i32 20, i32* %p
+        %tmp3.i = icmp eq i8* null, %q            ; <i1> [#uses=1]
+        br i1 %tmp3.i, label %exit, label %cond.true
+        
+cond.true:              ; preds = %loop.head
+        store i32 40, i32* %p
+        br label %loop.head
+
+; CHECK: exit:
+; CHECK: store i32 20, i32* %p
+exit:           ; preds = %loop.head
+        ret i32 0
+}
+

external/llvm-project/llvm/test/Transforms/LICM/2008-05-20-AliasSetVAArg.ll

@@ -0,0 +1,30 @@
+; RUN: opt < %s -licm -disable-output
+; PR2346
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i686-pc-linux-gnu"
+	%struct._zval_struct = type { %union._double, i32, i8, i8, i8, i8 }
+	%union._double = type { double }
+
+define i8* @zend_fetch_resource(%struct._zval_struct** %passed_id, i32 %default_id, i8* %resource_type_name, i32* %found_resource_type, i32 %num_resource_types, ...) {
+entry:
+	br label %whilebody.i.i
+
+whilebody.i.i:		; preds = %whilebody.i.i, %entry
+	br i1 false, label %ifthen.i.i, label %whilebody.i.i
+
+ifthen.i.i:		; preds = %whilebody.i.i
+	br label %forcond
+
+forcond:		; preds = %forbody, %ifthen.i.i
+	br i1 false, label %forbody, label %afterfor
+
+forbody:		; preds = %forcond
+	va_arg i8** null, i32		; <i32>:0 [#uses=0]
+	br i1 false, label %ifthen59, label %forcond
+
+ifthen59:		; preds = %forbody
+	unreachable
+
+afterfor:		; preds = %forcond
+	ret i8* null
+}

external/llvm-project/llvm/test/Transforms/LICM/2008-07-22-LoadGlobalConstant.ll

@@ -0,0 +1,39 @@
+; RUN: opt < %s -basicaa -licm -S | FileCheck %s
+
+@a = external constant float*
+
+define void @test(i32 %count) {
+entry:
+        br label %forcond
+
+; CHECK:  %tmp3 = load float*, float** @a
+; CHECK:  br label %forcond
+
+forcond:
+        %i.0 = phi i32 [ 0, %entry ], [ %inc, %forbody ]
+        %cmp = icmp ult i32 %i.0, %count
+        br i1 %cmp, label %forbody, label %afterfor
+
+; CHECK:  %i.0 = phi i32 [ 0, %entry ], [ %inc, %forbody ]
+; CHECK:  %cmp = icmp ult i32 %i.0, %count
+; CHECK:  br i1 %cmp, label %forbody, label %afterfor
+
+forbody:
+        %tmp3 = load float*, float** @a
+        %arrayidx = getelementptr float, float* %tmp3, i32 %i.0
+        %tmp7 = uitofp i32 %i.0 to float
+        store float %tmp7, float* %arrayidx
+        %inc = add i32 %i.0, 1
+        br label %forcond
+
+; CHECK:  %arrayidx = getelementptr float, float* %tmp3, i32 %i.0
+; CHECK:  %tmp7 = uitofp i32 %i.0 to float
+; CHECK:  store float %tmp7, float* %arrayidx
+; CHECK:  %inc = add i32 %i.0, 1
+; CHECK:  br label %forcond
+
+afterfor:
+        ret void
+}
+
+; CHECK:  ret void

external/llvm-project/llvm/test/Transforms/LICM/2009-12-10-LICM-Indbr-Crash.ll

@@ -0,0 +1,21 @@
+; Test for rdar://7452967
+; RUN: opt < %s -licm -disable-output
+define void @foo (i8* %v)
+{
+  entry:
+    br i1 undef, label %preheader, label %return
+
+  preheader:
+    br i1 undef, label %loop, label %return
+
+  loop:
+    indirectbr i8* undef, [label %preheader, label %stuff]
+
+  stuff:
+    %0 = load i8, i8* undef, align 1
+    br label %loop
+
+  return:
+    ret void
+
+}

external/llvm-project/llvm/test/Transforms/LICM/2011-04-06-HoistMissedASTUpdate.ll

@@ -0,0 +1,32 @@
+; RUN: opt < %s -basicaa -licm -S | FileCheck %s
+; PR9630
+
+@g_39 = external global i16, align 2
+
+declare i32* @func_84(i32** nocapture) nounwind readonly
+
+declare i32** @func_108(i32*** nocapture) nounwind readonly
+
+define void @func() nounwind {
+entry:
+  br label %for.body4.lr.ph
+
+for.body4.lr.ph:
+  br label %for.body4
+
+; CHECK: for.body4:
+; CHECK: load volatile i16, i16* @g_39
+
+for.body4:
+  %l_612.11 = phi i32* [ undef, %for.body4.lr.ph ], [ %call19, %for.body4 ]
+  %tmp7 = load volatile i16, i16* @g_39, align 2
+  %call = call i32** @func_108(i32*** undef)
+  %call19 = call i32* @func_84(i32** %call)
+  br i1 false, label %for.body4, label %for.cond.loopexit
+
+for.cond.loopexit:
+  br i1 false, label %for.body4.lr.ph, label %for.end26
+
+for.end26:
+  ret void
+}