Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/InstCombine/ARM/strcmp.ll

@@ -1,153 +0,0 @@
-; Test that the strcmp library call simplifier works correctly.
-; RUN: opt < %s -instcombine -S | FileCheck %s
-
-target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
-
-@hello = constant [6 x i8] c"hello\00"
-@hell = constant [5 x i8] c"hell\00"
-@bell = constant [5 x i8] c"bell\00"
-@null = constant [1 x i8] zeroinitializer
-
-declare i32 @strcmp(i8*, i8*)
-
-; strcmp("", x) -> -*x
-define arm_aapcscc i32 @test1(i8* %str2) {
-; CHECK-LABEL: @test1(
-; CHECK: %strcmpload = load i8, i8* %str
-; CHECK: %1 = zext i8 %strcmpload to i32
-; CHECK: %2 = sub nsw i32 0, %1
-; CHECK: ret i32 %2
-
-  %str1 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
-  %temp1 = call arm_apcscc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp1
-
-}
-
-; strcmp(x, "") -> *x
-define arm_aapcscc i32 @test2(i8* %str1) {
-; CHECK-LABEL: @test2(
-; CHECK: %strcmpload = load i8, i8* %str
-; CHECK: %1 = zext i8 %strcmpload to i32
-; CHECK: ret i32 %1
-
-  %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
-  %temp1 = call arm_aapcscc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp1
-}
-
-; strcmp(x, y)  -> cnst
-define arm_aapcscc i32 @test3() {
-; CHECK-LABEL: @test3(
-; CHECK: ret i32 -1
-
-  %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 arm_aapcscc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp1
-}
-
-define arm_aapcscc i32 @test4() {
-; CHECK-LABEL: @test4(
-; CHECK: ret i32 1
-
-  %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 arm_aapcscc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp1
-}
-
-; strcmp(x, y)   -> memcmp(x, y, <known length>)
-; (This transform is rather difficult to trigger in a useful manner)
-define arm_aapcscc i32 @test5(i1 %b) {
-; CHECK-LABEL: @test5(
-; CHECK: %memcmp = call i32 @memcmp(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* %str2, i32 5)
-; CHECK: ret i32 %memcmp
-
-  %str1 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
-  %temp1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
-  %temp2 = getelementptr inbounds [5 x i8], [5 x i8]* @bell, i32 0, i32 0
-  %str2 = select i1 %b, i8* %temp1, i8* %temp2
-  %temp3 = call arm_aapcscc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp3
-}
-
-; strcmp(x,x)  -> 0
-define arm_aapcscc i32 @test6(i8* %str) {
-; CHECK-LABEL: @test6(
-; CHECK: ret i32 0
-
-  %temp1 = call arm_aapcscc i32 @strcmp(i8* %str, i8* %str)
-  ret i32 %temp1
-}
-
-; strcmp("", x) -> -*x
-define arm_aapcs_vfpcc i32 @test1_vfp(i8* %str2) {
-; CHECK-LABEL: @test1_vfp(
-; CHECK: %strcmpload = load i8, i8* %str
-; CHECK: %1 = zext i8 %strcmpload to i32
-; CHECK: %2 = sub nsw i32 0, %1
-; CHECK: ret i32 %2
-
-  %str1 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
-  %temp1 = call arm_aapcs_vfpcc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp1
-
-}
-
-; strcmp(x, "") -> *x
-define arm_aapcs_vfpcc i32 @test2_vfp(i8* %str1) {
-; CHECK-LABEL: @test2_vfp(
-; CHECK: %strcmpload = load i8, i8* %str
-; CHECK: %1 = zext i8 %strcmpload to i32
-; CHECK: ret i32 %1
-
-  %str2 = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0
-  %temp1 = call arm_aapcs_vfpcc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp1
-}
-
-; strcmp(x, y)  -> cnst
-define arm_aapcs_vfpcc i32 @test3_vfp() {
-; CHECK-LABEL: @test3_vfp(
-; CHECK: ret i32 -1
-
-  %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 arm_aapcs_vfpcc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp1
-}
-
-define arm_aapcs_vfpcc i32 @test4_vfp() {
-; CHECK-LABEL: @test4_vfp(
-; CHECK: ret i32 1
-
-  %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 arm_aapcs_vfpcc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp1
-}
-
-; strcmp(x, y)   -> memcmp(x, y, <known length>)
-; (This transform is rather difficult to trigger in a useful manner)
-define arm_aapcs_vfpcc i32 @test5_vfp(i1 %b) {
-; CHECK-LABEL: @test5_vfp(
-; CHECK: %memcmp = call i32 @memcmp(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i32 0, i32 0), i8* %str2, i32 5)
-; CHECK: ret i32 %memcmp
-
-  %str1 = getelementptr inbounds [6 x i8], [6 x i8]* @hello, i32 0, i32 0
-  %temp1 = getelementptr inbounds [5 x i8], [5 x i8]* @hell, i32 0, i32 0
-  %temp2 = getelementptr inbounds [5 x i8], [5 x i8]* @bell, i32 0, i32 0
-  %str2 = select i1 %b, i8* %temp1, i8* %temp2
-  %temp3 = call arm_aapcs_vfpcc i32 @strcmp(i8* %str1, i8* %str2)
-  ret i32 %temp3
-}
-
-; strcmp(x,x)  -> 0
-define arm_aapcs_vfpcc i32 @test6_vfp(i8* %str) {
-; CHECK-LABEL: @test6_vfp(
-; CHECK: ret i32 0
-
-  %temp1 = call arm_aapcs_vfpcc i32 @strcmp(i8* %str, i8* %str)
-  ret i32 %temp1
-}