-; RUN: llvm-as < %s | opt -dse | llvm-dis | not grep DEAD
+; RUN: opt < %s -basicaa -dse -S | FileCheck %s
+target datalayout = "e-p:64:64:64"
+
+declare void @free(i8* nocapture)
+declare noalias i8* @malloc(i64)
+
+; CHECK: @test
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: @free
+; CHECK-NEXT: ret void
define void @test(i32* %Q, i32* %P) {
%DEAD = load i32* %Q ; <i32> [#uses=1]
store i32 %DEAD, i32* %P
- free i32* %P
+ %1 = bitcast i32* %P to i8*
+ tail call void @free(i8* %1)
ret void
}
+; CHECK: @test2
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: @free
+; CHECK-NEXT: ret void
define void @test2({i32, i32}* %P) {
%Q = getelementptr {i32, i32} *%P, i32 0, i32 1
store i32 4, i32* %Q
- free {i32,i32}* %P
+ %1 = bitcast {i32, i32}* %P to i8*
+ tail call void @free(i8* %1)
ret void
}
+
+; CHECK: @test3
+; CHECK-NOT: store
+; CHECK: ret void
+define void @test3() {
+ %m = call i8* @malloc(i64 24)
+ store i8 0, i8* %m
+ %m1 = getelementptr i8* %m, i64 1
+ store i8 1, i8* %m1
+ call void @free(i8* %m)
+ ret void
+}
+
+; PR11240
+; CHECK: @test4
+; CHECK-NOT: store
+; CHECK: ret void
+define void @test4(i1 %x) nounwind {
+entry:
+ %alloc1 = tail call noalias i8* @malloc(i64 4) nounwind
+ br i1 %x, label %skipinit1, label %init1
+
+init1:
+ store i8 1, i8* %alloc1
+ br label %skipinit1
+
+skipinit1:
+ tail call void @free(i8* %alloc1) nounwind
+ ret void
+}
+
+; CHECK: @test5
+define void @test5() {
+ br label %bb
+
+bb:
+ tail call void @free(i8* undef) nounwind
+ br label %bb
+}
+