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 9dc01b326e749a6e5c66e9d29b58818f790031ea..83406ff8f868ae656b24c58f0976c8a374f18adc 100644 (file)
--- a/test/Transforms/SimplifyLibCalls/StrCpy.ll
+++ b/test/Transforms/SimplifyLibCalls/StrCpy.ll
@@ -1,30 +1,37 @@
 ; Test that the StrCpyOptimizer works correctly
-; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | \
-; RUN:   not grep {call.*strcpy}
+; 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 = "-p:64:64:64"
+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"         ; <[6 x i8]*> [#uses=1]
-@null = constant [1 x i8] zeroinitializer              ; <[1 x i8]*> [#uses=1]
-@null_hello = constant [7 x i8] c"\00hello\00"         ; <[7 x i8]*> [#uses=1]
+@hello = constant [6 x i8] c"hello\00"
 
 declare i8* @strcpy(i8*, i8*)
 
-declare i32 @puts(i8*)
-
-define i32 @main() {
-       %target = alloca [1024 x i8]            ; <[1024 x i8]*> [#uses=1]
-       %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0                ; <i8*> [#uses=2]
-       store i8 0, i8* %arg1
-       %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0            ; <i8*> [#uses=1]
-       %rslt1 = call i8* @strcpy( i8* %arg1, i8* %arg2 )               ; <i8*> [#uses=1]
-       %arg3 = getelementptr [1 x i8]* @null, i32 0, i32 0             ; <i8*> [#uses=1]
-       %rslt2 = call i8* @strcpy( i8* %rslt1, i8* %arg3 )              ; <i8*> [#uses=1]
-       %arg4 = getelementptr [7 x i8]* @null_hello, i32 0, i32 0               ; <i8*> [#uses=1]
-       %rslt3 = call i8* @strcpy( i8* %rslt2, i8* %arg4 )              ; <i8*> [#uses=1]
-       call i32 @puts( i8* %rslt3 )            ; <i32>:1 [#uses=0]
-       ret i32 0
+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
+}