[SimplifyLibCalls] Remove useless bits of this tests.

[oota-llvm.git] / test / Transforms / InstCombine / strncmp-1.ll

diff --git a/test/Transforms/InstCombine/strncmp-1.ll b/test/Transforms/InstCombine/strncmp-1.ll
index 48b26d1a5f34a5a096e2bd9d22306ab76084d201..a1121821fdf5d424d82dac947e8ef7338122d781 100644 (file)
--- a/test/Transforms/InstCombine/strncmp-1.ll
+++ b/test/Transforms/InstCombine/strncmp-1.ll
@@ -12,67 +12,69 @@ declare i32 @strncmp(i8*, i8*, i32)
 
 ; strncmp("", x, n) -> -*x
 define i32 @test1(i8* %str2) {
-; CHECK: @test1
-; CHECK: %strcmpload = load i8* %str
+; CHECK-LABEL: @test1(
+; CHECK: %strcmpload = load i8, i8* %str
 ; CHECK: %1 = zext i8 %strcmpload to i32
-; CHECK: %2 = sub i32 0, %1
+; CHECK: %2 = sub nsw i32 0, %1
 ; CHECK: ret i32 %2
 
-  %str1 = getelementptr inbounds [1 x i8]* @null, i32 0, i32 0
+  %str1 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
   %temp1 = call i32 @strncmp(i8* %str1, i8* %str2, i32 10)
   ret i32 %temp1
 }
 
 ; strncmp(x, "", n) -> *x
 define i32 @test2(i8* %str1) {
-; CHECK: @test2
-; CHECK: %strcmpload = load i8* %str1
+; CHECK-LABEL: @test2(
+; CHECK: %strcmpload = load i8, i8* %str1
 ; CHECK: %1 = zext i8 %strcmpload to i32
 ; CHECK: ret i32 %1
 
-  %str2 = getelementptr inbounds [1 x i8]* @null, i32 0, i32 0
+  %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
   %temp1 = call i32 @strncmp(i8* %str1, i8* %str2, i32 10)
   ret i32 %temp1
 }
 
 ; strncmp(x, y, n)  -> cnst
 define i32 @test3() {
-; CHECK: @test3
+; CHECK-LABEL: @test3(
 ; CHECK: ret i32 -1
 
-  %str1 = getelementptr inbounds [5 x i8]* @hell, i32 0, i32 0
-  %str2 = getelementptr inbounds [6 x i8]* @hello, i32 0, i32 0
+  %str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
+  %str2 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
   %temp1 = call i32 @strncmp(i8* %str1, i8* %str2, i32 10)
   ret i32 %temp1
 }
 
 define i32 @test4() {
-; CHECK: @test4
+; CHECK-LABEL: @test4(
 ; CHECK: ret i32 1
 
-  %str1 = getelementptr inbounds [5 x i8]* @hell, i32 0, i32 0
-  %str2 = getelementptr inbounds [1 x i8]* @null, i32 0, i32 0
+  %str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
+  %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
   %temp1 = call i32 @strncmp(i8* %str1, i8* %str2, i32 10)
   ret i32 %temp1
 }
 
 define i32 @test5() {
-; CHECK: @test5
+; CHECK-LABEL: @test5(
 ; CHECK: ret i32 0
 
-  %str1 = getelementptr inbounds [5 x i8]* @hell, i32 0, i32 0
-  %str2 = getelementptr inbounds [6 x i8]* @hello, i32 0, i32 0
+  %str1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
+  %str2 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
   %temp1 = call i32 @strncmp(i8* %str1, i8* %str2, i32 4)
   ret i32 %temp1
 }
 
 ; strncmp(x,y,1) -> memcmp(x,y,1)
-; TODO: Once the memcmp simplifier gets moved into the instcombine pass
-; the following memcmp will be folded into two loads and a subtract.
 define i32 @test6(i8* %str1, i8* %str2) {
-; CHECK: @test6
-; CHECK: call i32 @memcmp
-; CHECK: ret i32 %memcmp
+; CHECK-LABEL: @test6(
+; CHECK: [[LOAD1:%[a-z]+]] = load i8, i8* %str1, align 1
+; CHECK: [[ZEXT1:%[a-z]+]] = zext i8 [[LOAD1]] to i32
+; CHECK: [[LOAD2:%[a-z]+]] = load i8, i8* %str2, align 1
+; CHECK: [[ZEXT2:%[a-z]+]] = zext i8 [[LOAD2]] to i32
+; CHECK: [[RET:%[a-z]+]] = sub nsw i32 [[ZEXT1]], [[ZEXT2]]
+; CHECK: ret i32 [[RET]]
 
   %temp1 = call i32 @strncmp(i8* %str1, i8* %str2, i32 1)
   ret i32 %temp1
@@ -80,7 +82,7 @@ define i32 @test6(i8* %str1, i8* %str2) {
 
 ; strncmp(x,y,0)   -> 0
 define i32 @test7(i8* %str1, i8* %str2) {
-; CHECK: @test7
+; CHECK-LABEL: @test7(
 ; CHECK: ret i32 0
 
   %temp1 = call i32 @strncmp(i8* %str1, i8* %str2, i32 0)
@@ -89,7 +91,7 @@ define i32 @test7(i8* %str1, i8* %str2) {
 
 ; strncmp(x,x,n)  -> 0
 define i32 @test8(i8* %str, i32 %n) {
-; CHECK: @test8
+; CHECK-LABEL: @test8(
 ; CHECK: ret i32 0
 
   %temp1 = call i32 @strncmp(i8* %str, i8* %str, i32 %n)