; RUN: llvm-as < %s | opt -instcombine | llvm-dis | FileCheck %s
+target datalayout = "e-p:64:64"
+
%pair = type { i32, i32 }
+%struct.B = type { double }
+%struct.A = type { %struct.B, i32, i32 }
+
+
@Global = constant [10 x i8] c"helloworld"
; Test noop elimination
; CHECK: @test11
; CHECK: icmp eq %pair* %X, null
}
+
+
+; PR4748
+define i32 @test12(%struct.A* %a) {
+entry:
+ %g3 = getelementptr %struct.A* %a, i32 0, i32 1
+ store i32 10, i32* %g3, align 4
+
+ %g4 = getelementptr %struct.A* %a, i32 0, i32 0
+
+ %new_a = bitcast %struct.B* %g4 to %struct.A*
+
+ %g5 = getelementptr %struct.A* %new_a, i32 0, i32 1
+ %a_a = load i32* %g5, align 4
+ ret i32 %a_a
+; CHECK: @test12
+; CHECK: getelementptr %struct.A* %a, i64 0, i32 1
+; CHECK-NEXT: store i32 10, i32* %g3
+; CHECK-NEXT: ret i32 10
+}
+
+
+; PR2235
+%S = type { i32, [ 100 x i32] }
+define i1 @test13(i64 %X, %S* %P) {
+ %A = getelementptr inbounds %S* %P, i32 0, i32 1, i64 %X
+ %B = getelementptr inbounds %S* %P, i32 0, i32 0
+ %C = icmp eq i32* %A, %B
+ ret i1 %C
+; CHECK: @test13
+; CHECK: %C = icmp eq i64 %X, -1
+}
+
+
+@G = external global [3 x i8] ; <[3 x i8]*> [#uses=1]
+define i8* @test14(i32 %Idx) {
+ %idx = zext i32 %Idx to i64 ; <i64> [#uses=1]
+ %tmp = getelementptr i8* getelementptr ([3 x i8]* @G, i32 0, i32 0), i64 %idx
+ ret i8* %tmp
+; CHECK: @test14
+; CHECK: getelementptr [3 x i8]* @G, i64 0, i64 %idx
+}
+
+
+; Test folding of constantexpr geps into normal geps.
+@Array = external global [40 x i32] ; <[40 x i32]*> [#uses=2]
+define i32 *@test15(i64 %X) {
+ %A = getelementptr i32* getelementptr ([40 x i32]* @Array, i64 0, i64 0), i64 %X
+ ret i32* %A
+; CHECK: @test15
+; CHECK: getelementptr [40 x i32]* @Array, i64 0, i64 %X
+}
+
+
+define i32* @test16(i32* %X, i32 %Idx) {
+ %R = getelementptr i32* %X, i32 %Idx
+ ret i32* %R
+; CHECK: @test16
+; CHECK: sext i32 %Idx to i64
+}
+
+
+define i1 @test17(i16* %P, i32 %I, i32 %J) {
+ %X = getelementptr inbounds i16* %P, i32 %I
+ %Y = getelementptr inbounds i16* %P, i32 %J
+ %C = icmp ult i16* %X, %Y
+ ret i1 %C
+; CHECK: @test17
+; CHECK: %C = icmp slt i32 %I, %J
+}
+
+define i1 @test18(i16* %P, i32 %I) {
+ %X = getelementptr inbounds i16* %P, i32 %I
+ %C = icmp ult i16* %X, %P
+ ret i1 %C
+; CHECK: @test18
+; CHECK: %C = icmp slt i32 %I, 0
+}
+
+define i32 @test19(i32* %P, i32 %A, i32 %B) {
+ %tmp.4 = getelementptr inbounds i32* %P, i32 %A
+ %tmp.9 = getelementptr inbounds i32* %P, i32 %B
+ %tmp.10 = icmp eq i32* %tmp.4, %tmp.9
+ %tmp.11 = zext i1 %tmp.10 to i32
+ ret i32 %tmp.11
+; CHECK: @test19
+; CHECK: icmp eq i32 %A, %B
+}
+
+define i32 @test20(i32* %P, i32 %A, i32 %B) {
+ %tmp.4 = getelementptr inbounds i32* %P, i32 %A
+ %tmp.6 = icmp eq i32* %tmp.4, %P
+ %tmp.7 = zext i1 %tmp.6 to i32
+ ret i32 %tmp.7
+; CHECK: @test20
+; CHECK: icmp eq i32 %A, 0
+}
+
+
+