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-rw-r--r--test/Transforms/InstCombine/strcpy_chk-1.ll54
1 files changed, 30 insertions, 24 deletions
diff --git a/test/Transforms/InstCombine/strcpy_chk-1.ll b/test/Transforms/InstCombine/strcpy_chk-1.ll
index c03e8a348b8..3e48f4fd305 100644
--- a/test/Transforms/InstCombine/strcpy_chk-1.ll
+++ b/test/Transforms/InstCombine/strcpy_chk-1.ll
@@ -7,16 +7,16 @@ target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f3
@a = common global [60 x i8] zeroinitializer, align 1
@b = common global [60 x i8] zeroinitializer, align 1
-@.str = private constant [8 x i8] c"abcdefg\00"
+@.str = private constant [12 x i8] c"abcdefghijk\00"
; Check cases where slen >= strlen (src).
define void @test_simplify1() {
; CHECK: @test_simplify1
%dst = getelementptr inbounds [60 x i8]* @a, i32 0, i32 0
- %src = getelementptr inbounds [8 x i8]* @.str, i32 0, i32 0
+ %src = getelementptr inbounds [12 x i8]* @.str, i32 0, i32 0
-; CHECK-NEXT: call i8* @strcpy
+; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32
call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 60)
ret void
}
@@ -24,19 +24,19 @@ define void @test_simplify1() {
define void @test_simplify2() {
; CHECK: @test_simplify2
%dst = getelementptr inbounds [60 x i8]* @a, i32 0, i32 0
- %src = getelementptr inbounds [8 x i8]* @.str, i32 0, i32 0
+ %src = getelementptr inbounds [12 x i8]* @.str, i32 0, i32 0
-; CHECK-NEXT: call i8* @strcpy
- call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 8)
+; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32
+ call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 12)
ret void
}
define void @test_simplify3() {
; CHECK: @test_simplify3
%dst = getelementptr inbounds [60 x i8]* @a, i32 0, i32 0
- %src = getelementptr inbounds [8 x i8]* @.str, i32 0, i32 0
+ %src = getelementptr inbounds [12 x i8]* @.str, i32 0, i32 0
-; CHECK-NEXT: call i8* @strcpy
+; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32
call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 -1)
ret void
}
@@ -53,36 +53,42 @@ define void @test_simplify4() {
ret void
}
-define void @test_no_simplify1() {
-; CHECK: @test_no_simplify1
+; Check case where the string length is not constant.
+
+define void @test_simplify5() {
+; CHECK: @test_simplify5
%dst = getelementptr inbounds [60 x i8]* @a, i32 0, i32 0
- %src = getelementptr inbounds [60 x i8]* @b, i32 0, i32 0
+ %src = getelementptr inbounds [12 x i8]* @.str, i32 0, i32 0
-; CHECK-NEXT: call i8* @__strcpy_chk
- call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 8)
+; CHECK: @__memcpy_chk
+ %len = call i32 @llvm.objectsize.i32(i8* %dst, i1 false)
+ call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 %len)
ret void
}
-; Check case were slen < strlen (src).
+; Check case where the source and destination are the same.
-define void @test_no_simplify2() {
-; CHECK: @test_no_simplify2
+define i8* @test_simplify6() {
+; CHECK: @test_simplify6
%dst = getelementptr inbounds [60 x i8]* @a, i32 0, i32 0
- %src = getelementptr inbounds [8 x i8]* @.str, i32 0, i32 0
-; CHECK-NEXT: call i8* @__strcpy_chk
- call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 3)
- ret void
+; CHECK: getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0)
+ %len = call i32 @llvm.objectsize.i32(i8* %dst, i1 false)
+ %ret = call i8* @__strcpy_chk(i8* %dst, i8* %dst, i32 %len)
+ ret i8* %ret
}
-define void @test_no_simplify3() {
-; CHECK: @test_no_simplify3
+; Check case where slen < strlen (src).
+
+define void @test_no_simplify1() {
+; CHECK: @test_no_simplify1
%dst = getelementptr inbounds [60 x i8]* @a, i32 0, i32 0
- %src = getelementptr inbounds [8 x i8]* @.str, i32 0, i32 0
+ %src = getelementptr inbounds [60 x i8]* @b, i32 0, i32 0
; CHECK-NEXT: call i8* @__strcpy_chk
- call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 0)
+ call i8* @__strcpy_chk(i8* %dst, i8* %src, i32 8)
ret void
}
declare i8* @__strcpy_chk(i8*, i8*, i32) nounwind
+declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly