PR11061: Make simplifylibcalls fold strcmp("", x) correctly.

[oota-llvm.git] / test / Transforms / SimplifyLibCalls / StrCpy.ll

diff --git a/test/Transforms/SimplifyLibCalls/StrCpy.ll b/test/Transforms/SimplifyLibCalls/StrCpy.ll
index 1855c0d3869ef4bb021e811889fb2ecd21992aff..83406ff8f868ae656b24c58f0976c8a374f18adc 100644 (file)
--- a/test/Transforms/SimplifyLibCalls/StrCpy.ll
+++ b/test/Transforms/SimplifyLibCalls/StrCpy.ll
@@ -1,24 +1,37 @@
-; Test that the StrCatOptimizer works correctly
-; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*strcat'
-
-declare sbyte* %strcpy(sbyte*,sbyte*)
-declare int %puts(sbyte*)
-%hello = constant [6 x sbyte] c"hello\00"
-%null = constant [1 x sbyte] c"\00"
-%null_hello = constant [7 x sbyte] c"\00hello\00"
-
-implementation   ; Functions:
-
-int %main () {
-  %target = alloca [1024 x sbyte]
-  %arg1 = getelementptr [1024 x sbyte]* %target, int 0, int 0
-  store sbyte 0, sbyte* %arg1
-  %arg2 = getelementptr [6 x sbyte]* %hello, int 0, int 0
-  %rslt1 = call sbyte* %strcpy(sbyte* %arg1, sbyte* %arg2)
-  %arg3 = getelementptr [1 x sbyte]* %null, int 0, int 0
-  %rslt2 = call sbyte* %strcpy(sbyte* %rslt1, sbyte* %arg3)
-  %arg4 = getelementptr [7 x sbyte]* %null_hello, int 0, int 0
-  %rslt3 = call sbyte* %strcpy(sbyte* %rslt2, sbyte* %arg4)
-  call int %puts(sbyte* %rslt3)
-  ret int 0
+; Test that the StrCpyOptimizer works correctly
+; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
+
+; This transformation requires the pointer size, as it assumes that size_t is
+; the size of a pointer.
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
+
+@hello = constant [6 x i8] c"hello\00"
+
+declare i8* @strcpy(i8*, i8*)
+
+declare i8* @__strcpy_chk(i8*, i8*, i32) nounwind
+
+declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly
+
+; rdar://6839935
+
+define i32 @t1() {
+; CHECK: @t1
+  %target = alloca [1024 x i8]
+  %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0
+  %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0
+  %rslt1 = call i8* @strcpy( i8* %arg1, i8* %arg2 )
+; CHECK: @llvm.memcpy.p0i8.p0i8.i32
+  ret i32 0
+}
+
+define i32 @t2() {
+; CHECK: @t2
+  %target = alloca [1024 x i8]
+  %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0
+  %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0
+  %tmp1 = call i32 @llvm.objectsize.i32(i8* %arg1, i1 false)
+  %rslt1 = call i8* @__strcpy_chk(i8* %arg1, i8* %arg2, i32 %tmp1)
+; CHECK: @__memcpy_chk
+  ret i32 0
 }