simplifylibcalls doesn't optimize llvm.memmove, instcombine does.

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

diff --git a/test/Transforms/SimplifyLibCalls/StrLen.ll b/test/Transforms/SimplifyLibCalls/StrLen.ll
index 0e1750162f9d3fd34b9fef3f9ba1cca1f90d3e1b..521a2242c9bf68077896ba69ac1e538c36ebf866 100644 (file)
--- a/test/Transforms/SimplifyLibCalls/StrLen.ll
+++ b/test/Transforms/SimplifyLibCalls/StrLen.ll
@@ -1,21 +1,56 @@
 ; Test that the StrCatOptimizer works correctly
-; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*strlen'
-
-declare int %strlen(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 () {
-  %hello_p = getelementptr [6 x sbyte]* %hello, int 0, int 0
-  %hello_l = call int %strlen(sbyte* %hello_p)
-  %null_p = getelementptr [1 x sbyte]* %null, int 0, int 0
-  %null_l = call int %strlen(sbyte* %null_p)
-  %null_hello_p = getelementptr [7 x sbyte]* %null_hello, int 0, int 0
-  %null_hello_l = call int %strlen(sbyte* %null_hello_p)
-  %sum1 = add int %hello_l, %null_l
-  %sum2 = add int %sum1, %null_hello_l
-  ret int %sum2
+; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | \
+; RUN:    not grep {call.*strlen}
+
+target datalayout = "e-p:32:32"
+@hello = constant [6 x i8] c"hello\00"         ; <[6 x i8]*> [#uses=3]
+@null = constant [1 x i8] zeroinitializer              ; <[1 x i8]*> [#uses=3]
+@null_hello = constant [7 x i8] c"\00hello\00"         ; <[7 x i8]*> [#uses=1]
+
+declare i32 @strlen(i8*)
+
+define i32 @test1() {
+       %hello_p = getelementptr [6 x i8]* @hello, i32 0, i32 0         ; <i8*> [#uses=1]
+       %hello_l = call i32 @strlen( i8* %hello_p )             ; <i32> [#uses=1]
+       ret i32 %hello_l
+}
+
+define i32 @test2() {
+       %null_p = getelementptr [1 x i8]* @null, i32 0, i32 0           ; <i8*> [#uses=1]
+       %null_l = call i32 @strlen( i8* %null_p )               ; <i32> [#uses=1]
+       ret i32 %null_l
+}
+
+define i32 @test3() {
+       %null_hello_p = getelementptr [7 x i8]* @null_hello, i32 0, i32 0               ; <i8*> [#uses=1]
+       %null_hello_l = call i32 @strlen( i8* %null_hello_p )           ; <i32> [#uses=1]
+       ret i32 %null_hello_l
+}
+
+define i1 @test4() {
+       %hello_p = getelementptr [6 x i8]* @hello, i32 0, i32 0         ; <i8*> [#uses=1]
+       %hello_l = call i32 @strlen( i8* %hello_p )             ; <i32> [#uses=1]
+       %eq_hello = icmp eq i32 %hello_l, 0             ; <i1> [#uses=1]
+       ret i1 %eq_hello
+}
+
+define i1 @test5() {
+       %null_p = getelementptr [1 x i8]* @null, i32 0, i32 0           ; <i8*> [#uses=1]
+       %null_l = call i32 @strlen( i8* %null_p )               ; <i32> [#uses=1]
+       %eq_null = icmp eq i32 %null_l, 0               ; <i1> [#uses=1]
+       ret i1 %eq_null
+}
+
+define i1 @test6() {
+       %hello_p = getelementptr [6 x i8]* @hello, i32 0, i32 0         ; <i8*> [#uses=1]
+       %hello_l = call i32 @strlen( i8* %hello_p )             ; <i32> [#uses=1]
+       %ne_hello = icmp ne i32 %hello_l, 0             ; <i1> [#uses=1]
+       ret i1 %ne_hello
+}
+
+define i1 @test7() {
+       %null_p = getelementptr [1 x i8]* @null, i32 0, i32 0           ; <i8*> [#uses=1]
+       %null_l = call i32 @strlen( i8* %null_p )               ; <i32> [#uses=1]
+       %ne_null = icmp ne i32 %null_l, 0               ; <i1> [#uses=1]
+       ret i1 %ne_null
 }