X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=test%2FTransforms%2FInstCombine%2Fobjsize.ll;h=0ead9d123749cb6d5335e6f27ef6ca617a8e11b7;hb=ebb5183a2f16abc7c88241bb42412465f52c2a61;hp=28ceb68b49abfec749d730ff5af748881ce6760c;hpb=d589099eec8d120b5a7227072c4e717856e2276f;p=oota-llvm.git

diff --git a/test/Transforms/InstCombine/objsize.ll b/test/Transforms/InstCombine/objsize.ll
index 28ceb68b49a..0ead9d12374 100644
--- a/test/Transforms/InstCombine/objsize.ll
+++ b/test/Transforms/InstCombine/objsize.ll
@@ -42,7 +42,7 @@ define i32 @f() nounwind {
 
 define i1 @baz() nounwind {
 ; CHECK: @baz
-; CHECK-NEXT: ret i1 true
+; CHECK-NEXT: objectsize
   %1 = tail call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 0), i1 false)
   %2 = icmp eq i32 %1, -1
   ret i1 %2
@@ -106,7 +106,7 @@ bb12:
 
 %struct.data = type { [100 x i32], [100 x i32], [1024 x i8] }
 
-define i32 @test4() nounwind ssp {
+define i32 @test4(i8** %esc) nounwind ssp {
 ; CHECK: @test4
 entry:
   %0 = alloca %struct.data, align 8
@@ -115,13 +115,14 @@ entry:
 ; CHECK-NOT: @llvm.objectsize
 ; CHECK: @llvm.memset.p0i8.i32(i8* %1, i8 0, i32 1824, i32 8, i1 false)
   %3 = call i8* @__memset_chk(i8* %1, i32 0, i32 1824, i32 %2) nounwind
+  store i8* %1, i8** %esc
   ret i32 0
 }
 
 ; rdar://7782496
 @s = external global i8*
 
-define void @test5(i32 %n) nounwind ssp {
+define i8* @test5(i32 %n) nounwind ssp {
 ; CHECK: @test5
 entry:
   %0 = tail call noalias i8* @malloc(i32 20) nounwind
@@ -130,7 +131,7 @@ entry:
 ; CHECK-NOT: @llvm.objectsize
 ; CHECK: @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* %1, i32 10, i32 1, i1 false)
   %3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 10, i32 %1) nounwind
-  ret void
+  ret i8* %0
 }
 
 define void @test6(i32 %n) nounwind ssp {
@@ -149,12 +150,237 @@ declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind
 
 declare noalias i8* @malloc(i32) nounwind
 
-define i32 @test7() {
+define i32 @test7(i8** %esc) {
 ; CHECK: @test7
   %alloc = call noalias i8* @malloc(i32 48) nounwind
+  store i8* %alloc, i8** %esc
   %gep = getelementptr inbounds i8* %alloc, i32 16
   %objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false) nounwind readonly
-; CHECK-NEXT: ret i32 32
+; CHECK: ret i32 32
   ret i32 %objsize
 }
 
+declare noalias i8* @calloc(i32, i32) nounwind
+
+define i32 @test8(i8** %esc) {
+; CHECK: @test8
+  %alloc = call noalias i8* @calloc(i32 5, i32 7) nounwind
+  store i8* %alloc, i8** %esc
+  %gep = getelementptr inbounds i8* %alloc, i32 5
+  %objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false) nounwind readonly
+; CHECK: ret i32 30
+  ret i32 %objsize
+}
+
+declare noalias i8* @strdup(i8* nocapture) nounwind
+declare noalias i8* @strndup(i8* nocapture, i32) nounwind
+
+; CHECK: @test9
+define i32 @test9(i8** %esc) {
+  %call = tail call i8* @strdup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0)) nounwind
+  store i8* %call, i8** %esc, align 8
+  %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 8
+  ret i32 %1
+}
+
+; CHECK: @test10
+define i32 @test10(i8** %esc) {
+  %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 3) nounwind
+  store i8* %call, i8** %esc, align 8
+  %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 4
+  ret i32 %1
+}
+
+; CHECK: @test11
+define i32 @test11(i8** %esc) {
+  %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 7) nounwind
+  store i8* %call, i8** %esc, align 8
+  %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 8
+  ret i32 %1
+}
+
+; CHECK: @test12
+define i32 @test12(i8** %esc) {
+  %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 8) nounwind
+  store i8* %call, i8** %esc, align 8
+  %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 8
+  ret i32 %1
+}
+
+; CHECK: @test13
+define i32 @test13(i8** %esc) {
+  %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 57) nounwind
+  store i8* %call, i8** %esc, align 8
+  %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 8
+  ret i32 %1
+}
+
+; CHECK: @PR13390
+define i32 @PR13390(i1 %bool, i8* %a) {
+entry:
+  %cond = or i1 %bool, true
+  br i1 %cond, label %return, label %xpto
+
+xpto:
+  %select = select i1 %bool, i8* %select, i8* %a
+  %select2 = select i1 %bool, i8* %a, i8* %select2
+  %0 = tail call i32 @llvm.objectsize.i32(i8* %select, i1 true)
+  %1 = tail call i32 @llvm.objectsize.i32(i8* %select2, i1 true)
+  %2 = add i32 %0, %1
+; CHECK: ret i32 undef
+  ret i32 %2
+
+return:
+  ret i32 42
+}
+
+; CHECK: @PR13621
+define i32 @PR13621(i1 %bool) nounwind {
+entry:
+  %cond = or i1 %bool, true
+  br i1 %cond, label %return, label %xpto
+
+; technically reachable, but this malformed IR may appear as a result of constant propagation
+xpto:
+  %gep2 = getelementptr i8* %gep, i32 1
+  %gep = getelementptr i8* %gep2, i32 1
+  %o = call i32 @llvm.objectsize.i32(i8* %gep, i1 true)
+; CHECK: ret i32 undef
+  ret i32 %o
+
+return:
+  ret i32 7
+}
+
+declare noalias i8* @valloc(i32) nounwind
+
+; CHECK: @test14
+; CHECK: ret i32 6
+define i32 @test14(i32 %a) nounwind {
+  switch i32 %a, label %sw.default [
+    i32 1, label %sw.bb
+    i32 2, label %sw.bb1
+  ]
+
+sw.bb:
+  %call = tail call noalias i8* @malloc(i32 6) nounwind
+  br label %sw.epilog
+
+sw.bb1:
+  %call2 = tail call noalias i8* @calloc(i32 3, i32 2) nounwind
+  br label %sw.epilog
+
+sw.default:
+  %call3 = tail call noalias i8* @valloc(i32 6) nounwind
+  br label %sw.epilog
+
+sw.epilog:
+  %b.0 = phi i8* [ %call3, %sw.default ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ]
+  %1 = tail call i32 @llvm.objectsize.i32(i8* %b.0, i1 false)
+  ret i32 %1
+}
+
+; CHECK: @test15
+; CHECK: llvm.objectsize
+define i32 @test15(i32 %a) nounwind {
+  switch i32 %a, label %sw.default [
+    i32 1, label %sw.bb
+    i32 2, label %sw.bb1
+  ]
+
+sw.bb:
+  %call = tail call noalias i8* @malloc(i32 3) nounwind
+  br label %sw.epilog
+
+sw.bb1:
+  %call2 = tail call noalias i8* @calloc(i32 2, i32 1) nounwind
+  br label %sw.epilog
+
+sw.default:
+  %call3 = tail call noalias i8* @valloc(i32 3) nounwind
+  br label %sw.epilog
+
+sw.epilog:
+  %b.0 = phi i8* [ %call3, %sw.default ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ]
+  %1 = tail call i32 @llvm.objectsize.i32(i8* %b.0, i1 false)
+  ret i32 %1
+}
+
+; CHECK: @test16
+; CHECK: llvm.objectsize
+define i32 @test16(i8* %a, i32 %n) nounwind {
+  %b = alloca [5 x i8], align 1
+  %c = alloca [5 x i8], align 1
+  switch i32 %n, label %sw.default [
+    i32 1, label %sw.bb
+    i32 2, label %sw.bb1
+  ]
+
+sw.bb:
+  %bp = bitcast [5 x i8]* %b to i8*
+  br label %sw.epilog
+
+sw.bb1:
+  %cp = bitcast [5 x i8]* %c to i8*
+  br label %sw.epilog
+
+sw.default:
+  br label %sw.epilog
+
+sw.epilog:
+  %phi = phi i8* [ %a, %sw.default ], [ %cp, %sw.bb1 ], [ %bp, %sw.bb ]
+  %sz = call i32 @llvm.objectsize.i32(i8* %phi, i1 false)
+  ret i32 %sz
+}
+
+; CHECK: @test17
+; CHECK: ret i32 5
+define i32 @test17(i32 %n) nounwind {
+  %b = alloca [5 x i8], align 1
+  %c = alloca [5 x i8], align 1
+  %bp = bitcast [5 x i8]* %b to i8*
+  switch i32 %n, label %sw.default [
+    i32 1, label %sw.bb
+    i32 2, label %sw.bb1
+  ]
+
+sw.bb:
+  br label %sw.epilog
+
+sw.bb1:
+  %cp = bitcast [5 x i8]* %c to i8*
+  br label %sw.epilog
+
+sw.default:
+  br label %sw.epilog
+
+sw.epilog:
+  %phi = phi i8* [ %bp, %sw.default ], [ %cp, %sw.bb1 ], [ %bp, %sw.bb ]
+  %sz = call i32 @llvm.objectsize.i32(i8* %phi, i1 false)
+  ret i32 %sz
+}
+
+@globalalias = alias internal [60 x i8]* @a
+
+; CHECK: @test18
+; CHECK-NEXT: ret i32 60
+define i32 @test18() {
+  %bc = bitcast [60 x i8]* @globalalias to i8*
+  %1 = call i32 @llvm.objectsize.i32(i8* %bc, i1 false)
+  ret i32 %1
+}
+
+@globalalias2 = alias weak [60 x i8]* @a
+
+; CHECK: @test19
+; CHECK: llvm.objectsize
+define i32 @test19() {
+  %bc = bitcast [60 x i8]* @globalalias2 to i8*
+  %1 = call i32 @llvm.objectsize.i32(i8* %bc, i1 false)
+  ret i32 %1
+}