Update aosp/master LLVM for rebase to r256229

[android-x86/external-llvm.git] / test / Transforms / InstCombine / memcmp-1.ll

diff --git a/test/Transforms/InstCombine/memcmp-1.ll b/test/Transforms/InstCombine/memcmp-1.ll
index d960693..f9ff479 100644 (file)
--- a/test/Transforms/InstCombine/memcmp-1.ll
+++ b/test/Transforms/InstCombine/memcmp-1.ll
@@ -2,7 +2,7 @@
 ;
 ; RUN: opt < %s -instcombine -S | FileCheck %s
 
-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"
+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-n8:16:32:64"
 
 @foo = constant [4 x i8] c"foo\00"
 @hel = constant [4 x i8] c"hel\00"
@@ -33,9 +33,9 @@ define i32 @test_simplify2(i8* %mem1, i8* %mem2) {
 define i32 @test_simplify3(i8* %mem1, i8* %mem2) {
 ; CHECK-LABEL: @test_simplify3(
   %ret = call i32 @memcmp(i8* %mem1, i8* %mem2, i32 1)
-; CHECK: [[LOAD1:%[a-z]+]] = load i8* %mem1, align 1
+; CHECK: [[LOAD1:%[a-z]+]] = load i8, i8* %mem1, align 1
 ; CHECK: [[ZEXT1:%[a-z]+]] = zext i8 [[LOAD1]] to i32
-; CHECK: [[LOAD2:%[a-z]+]] = load i8* %mem2, align 1
+; CHECK: [[LOAD2:%[a-z]+]] = load i8, i8* %mem2, align 1
 ; CHECK: [[ZEXT2:%[a-z]+]] = zext i8 [[LOAD2]] to i32
 ; CHECK: [[RET:%[a-z]+]] = sub nsw i32 [[ZEXT1]], [[ZEXT2]]
   ret i32 %ret
@@ -46,8 +46,8 @@ define i32 @test_simplify3(i8* %mem1, i8* %mem2) {
 
 define i32 @test_simplify4() {
 ; CHECK-LABEL: @test_simplify4(
-  %mem1 = getelementptr [4 x i8]* @hel, i32 0, i32 0
-  %mem2 = getelementptr [8 x i8]* @hello_u, i32 0, i32 0
+  %mem1 = getelementptr [4 x i8], [4 x i8]* @hel, i32 0, i32 0
+  %mem2 = getelementptr [8 x i8], [8 x i8]* @hello_u, i32 0, i32 0
   %ret = call i32 @memcmp(i8* %mem1, i8* %mem2, i32 3)
   ret i32 %ret
 ; CHECK: ret i32 0
@@ -55,8 +55,8 @@ define i32 @test_simplify4() {
 
 define i32 @test_simplify5() {
 ; CHECK-LABEL: @test_simplify5(
-  %mem1 = getelementptr [4 x i8]* @hel, i32 0, i32 0
-  %mem2 = getelementptr [4 x i8]* @foo, i32 0, i32 0
+  %mem1 = getelementptr [4 x i8], [4 x i8]* @hel, i32 0, i32 0
+  %mem2 = getelementptr [4 x i8], [4 x i8]* @foo, i32 0, i32 0
   %ret = call i32 @memcmp(i8* %mem1, i8* %mem2, i32 3)
   ret i32 %ret
 ; CHECK: ret i32 1
@@ -64,9 +64,60 @@ define i32 @test_simplify5() {
 
 define i32 @test_simplify6() {
 ; CHECK-LABEL: @test_simplify6(
-  %mem1 = getelementptr [4 x i8]* @foo, i32 0, i32 0
-  %mem2 = getelementptr [4 x i8]* @hel, i32 0, i32 0
+  %mem1 = getelementptr [4 x i8], [4 x i8]* @foo, i32 0, i32 0
+  %mem2 = getelementptr [4 x i8], [4 x i8]* @hel, i32 0, i32 0
   %ret = call i32 @memcmp(i8* %mem1, i8* %mem2, i32 3)
   ret i32 %ret
 ; CHECK: ret i32 -1
 }
+
+; Check memcmp(mem1, mem2, 8)==0 -> *(int64_t*)mem1 == *(int64_t*)mem2
+
+define i1 @test_simplify7(i64 %x, i64 %y) {
+; CHECK-LABEL: @test_simplify7(
+  %x.addr = alloca i64, align 8
+  %y.addr = alloca i64, align 8
+  store i64 %x, i64* %x.addr, align 8
+  store i64 %y, i64* %y.addr, align 8
+  %xptr = bitcast i64* %x.addr to i8*
+  %yptr = bitcast i64* %y.addr to i8*
+  %call = call i32 @memcmp(i8* %xptr, i8* %yptr, i32 8)
+  %cmp = icmp eq i32 %call, 0
+  ret i1 %cmp
+; CHECK: %cmp = icmp eq i64 %x, %y
+; CHECK: ret i1 %cmp
+}
+
+; Check memcmp(mem1, mem2, 4)==0 -> *(int32_t*)mem1 == *(int32_t*)mem2
+
+define i1 @test_simplify8(i32 %x, i32 %y) {
+; CHECK-LABEL: @test_simplify8(
+  %x.addr = alloca i32, align 4
+  %y.addr = alloca i32, align 4
+  store i32 %x, i32* %x.addr, align 4
+  store i32 %y, i32* %y.addr, align 4
+  %xptr = bitcast i32* %x.addr to i8*
+  %yptr = bitcast i32* %y.addr to i8*
+  %call = call i32 @memcmp(i8* %xptr, i8* %yptr, i32 4)
+  %cmp = icmp eq i32 %call, 0
+  ret i1 %cmp
+; CHECK: %cmp = icmp eq i32 %x, %y
+; CHECK: ret i1 %cmp
+}
+
+; Check memcmp(mem1, mem2, 2)==0 -> *(int16_t*)mem1 == *(int16_t*)mem2
+
+define i1 @test_simplify9(i16 %x, i16 %y) {
+; CHECK-LABEL: @test_simplify9(
+  %x.addr = alloca i16, align 2
+  %y.addr = alloca i16, align 2
+  store i16 %x, i16* %x.addr, align 2
+  store i16 %y, i16* %y.addr, align 2
+  %xptr = bitcast i16* %x.addr to i8*
+  %yptr = bitcast i16* %y.addr to i8*
+  %call = call i32 @memcmp(i8* %xptr, i8* %yptr, i32 2)
+  %cmp = icmp eq i32 %call, 0
+  ret i1 %cmp
+; CHECK: %cmp = icmp eq i16 %x, %y
+; CHECK: ret i1 %cmp
+}