Fix same issue within Flang.

Author: paulwalker-arm

flang/lib/Frontend/CompilerInvocation.cpp

@@ -195,7 +195,7 @@ static bool parseVectorLibArg(Fortran::frontend::CodeGenOptions &opts,
   std::optional<VectorLibrary> val =
       llvm::StringSwitch<std::optional<VectorLibrary>>(arg->getValue())
           .Case("Accelerate", VectorLibrary::Accelerate)
-          .Case("LIBMVEC", VectorLibrary::LIBMVEC)
+          .Case("libmvec", VectorLibrary::LIBMVEC)
           .Case("MASSV", VectorLibrary::MASSV)
           .Case("SVML", VectorLibrary::SVML)
           .Case("SLEEF", VectorLibrary::SLEEF)

flang/test/Driver/fveclib-codegen.f90

@@ -1,6 +1,6 @@
 ! test that -fveclib= is passed to the backend
-! RUN: %if aarch64-registered-target %{ %flang -S -Ofast -target aarch64-unknown-linux-gnu -fveclib=LIBMVEC -o - %s | FileCheck %s %}
-! RUN: %if x86-registered-target %{ %flang -S -Ofast -target x86_64-unknown-linux-gnu -fveclib=LIBMVEC -o - %s | FileCheck %s %}
+! RUN: %if aarch64-registered-target %{ %flang -S -Ofast -target aarch64-unknown-linux-gnu -fveclib=SLEEF -o - %s | FileCheck %s --check-prefix=SLEEF %}
+! RUN: %if x86-registered-target %{ %flang -S -Ofast -target x86_64-unknown-linux-gnu -fveclib=libmvec -o - %s | FileCheck %s %}
 ! RUN: %flang -S -Ofast -fveclib=NoLibrary -o - %s | FileCheck %s --check-prefix=NOLIB
 
 subroutine sb(a, b)
@@ -9,6 +9,7 @@ subroutine sb(a, b)
   do i=1,100
 ! check that we used a vectorized call to powf()
 ! CHECK: _ZGVbN4vv_powf
+! SLEEF: _ZGVnN4vv_powf
 ! NOLIB: powf
     a(i) = a(i) ** b(i)
   end do

flang/test/Driver/fveclib.f90

@@ -1,6 +1,6 @@
 ! RUN: %flang -### -c -fveclib=none %s 2>&1 | FileCheck -check-prefix CHECK-NOLIB %s
 ! RUN: %flang -### -c -fveclib=Accelerate %s 2>&1 | FileCheck -check-prefix CHECK-ACCELERATE %s
-! RUN: %flang -### -c -fveclib=libmvec %s 2>&1 | FileCheck -check-prefix CHECK-libmvec %s
+! RUN: %flang -### -c --target=x86_64-unknown-linux-gnu -fveclib=libmvec %s 2>&1 | FileCheck -check-prefix CHECK-libmvec %s
 ! RUN: %flang -### -c -fveclib=MASSV %s 2>&1 | FileCheck -check-prefix CHECK-MASSV %s
 ! RUN: %flang -### -c -fveclib=Darwin_libsystem_m %s 2>&1 | FileCheck -check-prefix CHECK-DARWIN_LIBSYSTEM_M %s
 ! RUN: %flang -### -c --target=aarch64-none-none -fveclib=SLEEF %s 2>&1 | FileCheck -check-prefix CHECK-SLEEF %s
@@ -21,7 +21,7 @@
 
 ! RUN: not %flang --target=x86-none-none -c -fveclib=SLEEF %s 2>&1 | FileCheck -check-prefix CHECK-ERROR %s
 ! RUN: not %flang --target=x86-none-none -c -fveclib=ArmPL %s 2>&1 | FileCheck -check-prefix CHECK-ERROR %s
-! RUN: not %flang --target=aarch64-none-none -c -fveclib=LIBMVEC-X86 %s 2>&1 | FileCheck -check-prefix CHECK-ERROR %s
+! RUN: not %flang --target=aarch64-none-none -c -fveclib=libmvec %s 2>&1 | FileCheck -check-prefix CHECK-ERROR %s
 ! RUN: not %flang --target=aarch64-none-none -c -fveclib=SVML %s 2>&1 | FileCheck -check-prefix CHECK-ERROR %s
 ! CHECK-ERROR: unsupported option {{.*}} for target