clang/test/Driver/arm-no-float-regs.c

   1 // Check that -mfloat-abi=hard gives a warning if FP registers aren't available.
   2 // RUN: %clang --target=arm-none-eabi -mcpu=cortex-m0 -mfloat-abi=hard -### -c %s 2>&1 \
   3 // RUN:   | FileCheck %s
   4
   5 // RUN: %clang --target=arm-none-eabi -mcpu=cortex-m0 -mhard-float -### -c %s 2>&1 \
   6 // RUN:   | FileCheck -check-prefix=HARDFLOAT %s
   7
   8 // -mfloat-abi=hard and -march=...+nofp are incompatible in this instance:
   9 // RUN: %clang --target=arm-none-eabi -march=armv8.1-m.main+nofp -mfloat-abi=hard -### -c %s 2>&1
  10 // -mfloat-abi=hard and -march=...+nofp are compatible in this instance:
  11 // RUN: %clang --target=arm-none-eabi -march=armv8.1-m.main+mve+nofp -mfloat-abi=hard -### -c %s 2>&1 \
  12 // RUN:   | FileCheck -check-prefix=NOWARN %s
  13
  14 // Here the float ABI is calculated as "hard" and FP registers are
  15 // calculated to not be available. Since the float ABI wasn't specified
  16 // explicitly, the warning should not be emitted.
  17 // RUN: not %clang --target=thumbv5-windows -mcpu=arm10tdmi -### -c %s -o /dev/null 2>&1 \
  18 // RUN:   | FileCheck -check-prefix=NOWARN %s
  19
  20 // CHECK: warning: '-mfloat-abi=hard': selected processor lacks floating point registers
  21 // HARDFLOAT: warning: '-mhard-float': selected processor lacks floating point registers
  22 // NOWARN-NOT: selected processor lacks floating point registers