}
declare noalias i8* @malloc(i32)
-
+declare noalias i8* @calloc(i32, i32)
define void @test14(i32* %Q) {
}
; CHECK: @test20
; CHECK-NEXT: ret void
+
+; CHECK: @test21
+define void @test21() {
+ %m = call i8* @calloc(i32 9, i32 7)
+ store i8 0, i8* %m
+; CHECK-NEXT: ret void
+ ret void
+}
+
+; CHECK: @test22(
+define void @test22(i1 %i, i32 %k, i32 %m) nounwind {
+ %k.addr = alloca i32
+ %m.addr = alloca i32
+ %k.addr.m.addr = select i1 %i, i32* %k.addr, i32* %m.addr
+ store i32 0, i32* %k.addr.m.addr, align 4
+; CHECK-NEXT: ret void
+ ret void
+}
+
+; PR13547
+; CHECK: @test23
+; CHECK: store i8 97
+; CHECK: store i8 0
+declare noalias i8* @strdup(i8* nocapture) nounwind
+define noalias i8* @test23() nounwind uwtable ssp {
+ %x = alloca [2 x i8], align 1
+ %arrayidx = getelementptr inbounds [2 x i8]* %x, i64 0, i64 0
+ store i8 97, i8* %arrayidx, align 1
+ %arrayidx1 = getelementptr inbounds [2 x i8]* %x, i64 0, i64 1
+ store i8 0, i8* %arrayidx1, align 1
+ %call = call i8* @strdup(i8* %arrayidx) nounwind
+ ret i8* %call
+}
+
+; Make sure same sized store to later element is deleted
+; CHECK: @test24
+; CHECK-NOT: store i32 0
+; CHECK-NOT: store i32 0
+; CHECK: store i32 %b
+; CHECK: store i32 %c
+; CHECK: ret void
+define void @test24([2 x i32]* %a, i32 %b, i32 %c) nounwind {
+ %1 = getelementptr inbounds [2 x i32]* %a, i64 0, i64 0
+ store i32 0, i32* %1, align 4
+ %2 = getelementptr inbounds [2 x i32]* %a, i64 0, i64 1
+ store i32 0, i32* %2, align 4
+ %3 = getelementptr inbounds [2 x i32]* %a, i64 0, i64 0
+ store i32 %b, i32* %3, align 4
+ %4 = getelementptr inbounds [2 x i32]* %a, i64 0, i64 1
+ store i32 %c, i32* %4, align 4
+ ret void
+}
+
+; Check another case like PR13547 where strdup is not like malloc.
+; CHECK: @test25
+; CHECK: load i8
+; CHECK: store i8 0
+; CHECK: store i8 %tmp
+define i8* @test25(i8* %p) nounwind {
+ %p.4 = getelementptr i8* %p, i64 4
+ %tmp = load i8* %p.4, align 1
+ store i8 0, i8* %p.4, align 1
+ %q = call i8* @strdup(i8* %p) nounwind optsize
+ store i8 %tmp, i8* %p.4, align 1
+ ret i8* %q
+}