suck a bunch more gep tests into getelementptr.ll and filecheckize them all.

llvm-svn: 80517

1 files changed, 271 insertions, 16 deletions

diff --git a/llvm/test/Transforms/InstCombine/getelementptr.ll b/llvm/test/Transforms/InstCombine/getelementptr.ll
index 3953ee3b383..7bc08d0466f 100644
--- a/llvm/test/Transforms/InstCombine/getelementptr.ll
+++ b/llvm/test/Transforms/InstCombine/getelementptr.ll
@@ -1,7 +1,7 @@
 ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | FileCheck %s
 
 target datalayout = "e-p:64:64"
-
+%intstruct = type { i32 }
 %pair = type { i32, i32 }
 %struct.B = type { double }
 %struct.A = type { %struct.B, i32, i32 }
@@ -40,7 +40,7 @@ define i32* @test4({ i32 }* %I) {
         %B = getelementptr { i32 }* %A, i64 0, i32 0
         ret i32* %B
 ; CHECK: @test4
-; CHECK: getelementptr %0* %I, i64 1, i32 0
+; CHECK: getelementptr %intstruct* %I, i64 1, i32 0
 }
 
 define void @test5(i8 %B) {
@@ -62,8 +62,8 @@ define i32* @test6() {
 }
 
 define i32* @test7(i32* %I, i64 %C, i64 %D) {
-        %A = getelementptr i32* %I, i64 %C              ; <i32*> [#uses=1]
-        %B = getelementptr i32* %A, i64 %D              ; <i32*> [#uses=1]
+        %A = getelementptr i32* %I, i64 %C 
+        %B = getelementptr i32* %A, i64 %D 
         ret i32* %B
 ; CHECK: @test7
 ; CHECK: %A.sum = add i64 %C, %D
@@ -72,34 +72,34 @@ define i32* @test7(i32* %I, i64 %C, i64 %D) {
 
 define i8* @test8([10 x i32]* %X) {
         ;; Fold into the cast.
-        %A = getelementptr [10 x i32]* %X, i64 0, i64 0         ; <i32*> [#uses=1]
-        %B = bitcast i32* %A to i8*             ; <i8*> [#uses=1]
+        %A = getelementptr [10 x i32]* %X, i64 0, i64 0 
+        %B = bitcast i32* %A to i8*     
         ret i8* %B
 ; CHECK: @test8
 ; CHECK: bitcast [10 x i32]* %X to i8*
 }
 
 define i32 @test9() {
-        %A = getelementptr { i32, double }* null, i32 0, i32 1          ; <double*> [#uses=1]
-        %B = ptrtoint double* %A to i32         ; <i32> [#uses=1]
+        %A = getelementptr { i32, double }* null, i32 0, i32 1
+        %B = ptrtoint double* %A to i32        
         ret i32 %B
 ; CHECK: @test9
 ; CHECK: ret i32 8
 }
 
 define i1 @test10({ i32, i32 }* %x, { i32, i32 }* %y) {
-        %tmp.1 = getelementptr { i32, i32 }* %x, i32 0, i32 1           ; <i32*> [#uses=1]
-        %tmp.3 = getelementptr { i32, i32 }* %y, i32 0, i32 1           ; <i32*> [#uses=1]
+        %tmp.1 = getelementptr { i32, i32 }* %x, i32 0, i32 1
+        %tmp.3 = getelementptr { i32, i32 }* %y, i32 0, i32 1
         ;; seteq x, y
-        %tmp.4 = icmp eq i32* %tmp.1, %tmp.3            ; <i1> [#uses=1]
+        %tmp.4 = icmp eq i32* %tmp.1, %tmp.3       
         ret i1 %tmp.4
 ; CHECK: @test10
 ; CHECK: icmp eq %pair* %x, %y
 }
 
 define i1 @test11({ i32, i32 }* %X) {
-        %P = getelementptr { i32, i32 }* %X, i32 0, i32 0               ; <i32*> [#uses=1]
-        %Q = icmp eq i32* %P, null              ; <i1> [#uses=1]
+        %P = getelementptr { i32, i32 }* %X, i32 0, i32 0 
+        %Q = icmp eq i32* %P, null             
         ret i1 %Q
 ; CHECK: @test11
 ; CHECK: icmp eq %pair* %X, null
@@ -138,9 +138,9 @@ define i1 @test13(i64 %X, %S* %P) {
 }
 
 
-@G = external global [3 x i8]           ; <[3 x i8]*> [#uses=1]
+@G = external global [3 x i8]      
 define i8* @test14(i32 %Idx) {
-        %idx = zext i32 %Idx to i64             ; <i64> [#uses=1]
+        %idx = zext i32 %Idx to i64
         %tmp = getelementptr i8* getelementptr ([3 x i8]* @G, i32 0, i32 0), i64 %idx
         ret i8* %tmp
 ; CHECK: @test14
@@ -149,7 +149,7 @@ define i8* @test14(i32 %Idx) {
 
 
 ; Test folding of constantexpr geps into normal geps.
-@Array = external global [40 x i32]             ; <[40 x i32]*> [#uses=2]
+@Array = external global [40 x i32]
 define i32 *@test15(i64 %X) {
         %A = getelementptr i32* getelementptr ([40 x i32]* @Array, i64 0, i64 0), i64 %X
         ret i32* %A
@@ -203,4 +203,259 @@ define i32 @test20(i32* %P, i32 %A, i32 %B) {
 }
 
 
+define i32 @test21() {
+        %pbob1 = alloca %intstruct
+        %pbob2 = getelementptr %intstruct* %pbob1
+        %pbobel = getelementptr %intstruct* %pbob2, i64 0, i32 0
+        %rval = load i32* %pbobel
+        ret i32 %rval
+; CHECK: @test21
+; CHECK: getelementptr %intstruct* %pbob1, i64 0, i32 0
+}
+
+
+@A = global i32 1               ; <i32*> [#uses=1]
+@B = global i32 2               ; <i32*> [#uses=1]
+
+define i1 @test22() {
+        %C = icmp ult i32* getelementptr (i32* @A, i64 1), 
+                           getelementptr (i32* @B, i64 2) 
+        ret i1 %C
+; CHECK: @test22
+; CHECK: icmp ult (i32* getelementptr (i32* @A, i64 1), i32* getelementptr (i32* @B, i64 2))
+}
+
+
+%X = type { [10 x i32], float }
+
+define i1 @test23() {
+        %A = getelementptr %X* null, i64 0, i32 0, i64 0                ; <i32*> [#uses=1]
+        %B = icmp ne i32* %A, null              ; <i1> [#uses=1]
+        ret i1 %B
+; CHECK: @test23
+; CHECK: ret i1 false
+}
+
+%"java/lang/Object" = type { %struct.llvm_java_object_base }
+%"java/lang/StringBuffer" = type { %"java/lang/Object", i32, { %"java/lang/Object", i32, [0 x i16] }*, i1 }
+%struct.llvm_java_object_base = type opaque
+
+define void @test24() {
+bc0:
+        %tmp53 = getelementptr %"java/lang/StringBuffer"* null, i32 0, i32 1            ; <i32*> [#uses=1]
+        store i32 0, i32* %tmp53
+        ret void
+; CHECK: @test24
+; CHECK: store i32 0, i32* getelementptr (%"java/lang/StringBuffer"* null, i32 0, i32 1)
+}
+
+define void @test25() {
+entry:
+        %tmp = getelementptr { i64, i64, i64, i64 }* null, i32 0, i32 3         ; <i64*> [#uses=1]
+        %tmp.upgrd.1 = load i64* %tmp           ; <i64> [#uses=1]
+        %tmp8.ui = load i64* null               ; <i64> [#uses=1]
+        %tmp8 = bitcast i64 %tmp8.ui to i64             ; <i64> [#uses=1]
+        %tmp9 = and i64 %tmp8, %tmp.upgrd.1             ; <i64> [#uses=1]
+        %sext = trunc i64 %tmp9 to i32          ; <i32> [#uses=1]
+        %tmp27.i = sext i32 %sext to i64                ; <i64> [#uses=1]
+        tail call void @foo25( i32 0, i64 %tmp27.i )
+        unreachable
+; CHECK: @test25
+}
+
+declare void @foo25(i32, i64)
+
+
+; PR1637
+define i1 @test26(i8* %arr) {
+        %X = getelementptr i8* %arr, i32 1
+        %Y = getelementptr i8* %arr, i32 1
+        %test = icmp uge i8* %X, %Y
+        ret i1 %test
+; CHECK: @test26
+; CHECK: ret i1 true
+}
+
+	%struct.__large_struct = type { [100 x i64] }
+	%struct.compat_siginfo = type { i32, i32, i32, { [29 x i32] } }
+	%struct.siginfo_t = type { i32, i32, i32, { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] } }
+	%struct.sigval_t = type { i8* }
+
+define i32 @test27(%struct.compat_siginfo* %to, %struct.siginfo_t* %from) {
+entry:
+	%from_addr = alloca %struct.siginfo_t*	
+	%tmp344 = load %struct.siginfo_t** %from_addr, align 8	
+	%tmp345 = getelementptr %struct.siginfo_t* %tmp344, i32 0, i32 3
+	%tmp346 = getelementptr { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] }* %tmp345, i32 0, i32 0
+	%tmp346347 = bitcast { i32, i32, [0 x i8], %struct.sigval_t, i32 }* %tmp346 to { i32, i32, %struct.sigval_t }*	
+	%tmp348 = getelementptr { i32, i32, %struct.sigval_t }* %tmp346347, i32 0, i32 2
+	%tmp349 = getelementptr %struct.sigval_t* %tmp348, i32 0, i32 0
+	%tmp349350 = bitcast i8** %tmp349 to i32*
+	%tmp351 = load i32* %tmp349350, align 8	
+	%tmp360 = call i32 asm sideeffect "...",
+        "=r,ir,*m,i,0,~{dirflag},~{fpsr},~{flags}"( i32 %tmp351,
+         %struct.__large_struct* null, i32 -14, i32 0 )
+	unreachable
+; CHECK: @test27
+}
+
+; PR1978
+	%struct.x = type <{ i8 }>
+@.str = internal constant [6 x i8] c"Main!\00"	
+@.str1 = internal constant [12 x i8] c"destroy %p\0A\00"	
+
+define i32 @test28() nounwind  {
+entry:
+	%orientations = alloca [1 x [1 x %struct.x]]
+	%tmp3 = call i32 @puts( i8* getelementptr ([6 x i8]* @.str, i32 0, i32 0) ) nounwind 
+	%tmp45 = getelementptr inbounds [1 x [1 x %struct.x]]* %orientations, i32 1, i32 0, i32 0
+	%orientations62 = getelementptr [1 x [1 x %struct.x]]* %orientations, i32 0, i32 0, i32 0
+	br label %bb10
+
+bb10:
+	%indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb10 ]
+	%tmp.0.reg2mem.0.rec = mul i32 %indvar, -1	
+	%tmp12.rec = add i32 %tmp.0.reg2mem.0.rec, -1	
+	%tmp12 = getelementptr inbounds %struct.x* %tmp45, i32 %tmp12.rec
+	%tmp16 = call i32 (i8*, ...)* @printf( i8* getelementptr ([12 x i8]* @.str1, i32 0, i32 0), %struct.x* %tmp12 ) nounwind
+	%tmp84 = icmp eq %struct.x* %tmp12, %orientations62
+	%indvar.next = add i32 %indvar, 1
+	br i1 %tmp84, label %bb17, label %bb10
+
+bb17:	
+	ret i32 0
+; CHECK: @test28
+; CHECK: icmp eq i32 %indvar, 0
+}
+
+declare i32 @puts(i8*)
+
+declare i32 @printf(i8*, ...)
+
+
+
+
+; rdar://6762290
+	%T = type <{ i64, i64, i64 }>
+define i32 @test29(i8* %start, i32 %X) nounwind {
+entry:
+	%tmp3 = load i64* null		
+	%add.ptr = getelementptr i8* %start, i64 %tmp3
+	%tmp158 = load i32* null
+	%add.ptr159 = getelementptr %T* null, i32 %tmp158
+	%add.ptr209 = getelementptr i8* %start, i64 0
+	%add.ptr212 = getelementptr i8* %add.ptr209, i32 %X
+	%cmp214 = icmp ugt i8* %add.ptr212, %add.ptr
+	br i1 %cmp214, label %if.then216, label %if.end363
+
+if.then216:
+	ret i32 1
+
+if.end363:
+	ret i32 0
+; CHECK: @test29
+}
+
+
+; PR3694
+define i32 @test30(i32 %m, i32 %n) nounwind {
+entry:
+	%0 = alloca i32, i32 %n, align 4
+	%1 = bitcast i32* %0 to [0 x i32]*
+	call void @test30f(i32* %0) nounwind
+	%2 = getelementptr [0 x i32]* %1, i32 0, i32 %m
+	%3 = load i32* %2, align 4
+	ret i32 %3
+; CHECK: @test30
+; CHECK: getelementptr i32
+}
+
+declare void @test30f(i32*)
+
+
+
+define i1 @test31(i32* %A) {
+        %B = getelementptr i32* %A, i32 1
+        %C = getelementptr i32* %A, i64 1
+        %V = icmp eq i32* %B, %C 
+        ret i1 %V
+; CHECK: @test31
+; CHECK: ret i1 true
+}
+
+
+; PR1345
+define i8* @test32(i8* %v) {
+	%A = alloca [4 x i8*], align 16
+	%B = getelementptr [4 x i8*]* %A, i32 0, i32 0
+	store i8* null, i8** %B
+	%C = bitcast [4 x i8*]* %A to { [16 x i8] }*
+	%D = getelementptr { [16 x i8] }* %C, i32 0, i32 0, i32 8
+	%E = bitcast i8* %D to i8**
+	store i8* %v, i8** %E
+	%F = getelementptr [4 x i8*]* %A, i32 0, i32 2	
+	%G = load i8** %F
+	ret i8* %G
+; CHECK: @test32
+; CHECK: %D = getelementptr [4 x i8*]* %A, i64 0, i64 1
+; CHECK: %F = getelementptr [4 x i8*]* %A, i64 0, i64 2
+}
+
+; PR3290
+%struct.Key = type { { i32, i32 } }
+%struct.anon = type <{ i8, [3 x i8], i32 }>
+
+define i32 *@test33(%struct.Key *%A) {
+	%B = bitcast %struct.Key* %A to %struct.anon*
+        %C = getelementptr %struct.anon* %B, i32 0, i32 2 
+	ret i32 *%C
+; CHECK: @test33
+; CHECK: getelementptr %struct.Key* %A, i64 0, i32 0, i32 1
+}
+
+
+
+	%T2 = type { i8*, i8 }
+define i8* @test34(i8* %Val, i64 %V) nounwind {
+entry:
+	%A = alloca %T2, align 8	
+	%mrv_gep = bitcast %T2* %A to i64*
+	%B = getelementptr %T2* %A, i64 0, i32 0
+        
+      	store i64 %V, i64* %mrv_gep
+	%C = load i8** %B, align 8
+	ret i8* %C
+; CHECK: @test34
+; CHECK: %V.c = inttoptr i64 %V to i8*
+; CHECK: ret i8* %V.c
+}
+
+%t0 = type { i8*, [19 x i8] }
+%t1 = type { i8*, [0 x i8] }
+
+@array = external global [11 x i8]
+
+@s = external global %t0
+@"\01LC8" = external constant [17 x i8]
+
+; Instcombine should be able to fold this getelementptr.
+
+define i32 @test35() nounwind {
+  call i32 (i8*, ...)* @printf(i8* getelementptr ([17 x i8]* @"\01LC8", i32 0, i32 0),
+             i8* getelementptr (%t1* bitcast (%t0* @s to %t1*), i32 0, i32 1, i32 0)) nounwind
+  ret i32 0
+; CHECK: @test35
+; CHECK: call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([17 x i8]* @"\01LC8", i64 0, i64 0), i8* bitcast (i8** getelementptr (%t1* bitcast (%t0* @s to %t1*), i64 1, i32 0) to i8*)) nounwind
+}
+
+; Instcombine should constant-fold the GEP so that indices that have
+; static array extents are within bounds of those array extents.
+; In the below, -1 is not in the range [0,11). After the transformation,
+; the same address is computed, but 3 is in the range of [0,11).
+
+define i8* @test36() nounwind {
+  ret i8* getelementptr ([11 x i8]* @array, i32 0, i64 -1)
+; CHECK: @test36
+; CHECK: ret i8* getelementptr ([11 x i8]* @array, i64 1676976733973595601, i64 4)
+}