2315e9874c
... and give more guidance to users.
If specifying -msve-vector-bits on a non-SVE target, clang would say:
error: '-msve-vector-bits' is not supported without SVE enabled
1. The driver lacks logic for "implied features".
This would result in this error being raised for -march=...+sve2,
even though +sve2 implies +sve.
2. Feature implication is well modelled in LLVM, so push the error down
the stack.
3. Hint to the user what flag they need to consider setting.
Now clang fails later, when the feature is used, saying:
aarch64-sve-vector-bits.c:42:41: error: 'arm_sve_vector_bits' attribute is not supported on targets missing 'sve'; specify an appropriate -march= or -mcpu=
typedef svint32_t noflag __attribute__((arm_sve_vector_bits(256)));
Move clang/test/Sema/{neon => arm}-vector-types-support.c and put tests for
this warning together in one place.
Reviewed By: sdesmalen
Differential Revision: https://reviews.llvm.org/D92487
54 lines
3.1 KiB
C
54 lines
3.1 KiB
C
// -----------------------------------------------------------------------------
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// Tests for the -msve-vector-bits flag
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// -----------------------------------------------------------------------------
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// RUN: %clang -c %s -### -target aarch64-none-linux-gnu -march=armv8-a+sve \
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// RUN: -msve-vector-bits=128 2>&1 | FileCheck --check-prefix=CHECK-128 %s
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// RUN: %clang -c %s -### -target aarch64-none-linux-gnu -march=armv8-a+sve \
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// RUN: -msve-vector-bits=256 2>&1 | FileCheck --check-prefix=CHECK-256 %s
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// RUN: %clang -c %s -### -target aarch64-none-linux-gnu -march=armv8-a+sve \
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// RUN: -msve-vector-bits=512 2>&1 | FileCheck --check-prefix=CHECK-512 %s
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// RUN: %clang -c %s -### -target aarch64-none-linux-gnu -march=armv8-a+sve \
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// RUN: -msve-vector-bits=1024 2>&1 | FileCheck --check-prefix=CHECK-1024 %s
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// RUN: %clang -c %s -### -target aarch64-none-linux-gnu -march=armv8-a+sve \
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// RUN: -msve-vector-bits=2048 2>&1 | FileCheck --check-prefix=CHECK-2048 %s
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// RUN: %clang -c %s -### -target aarch64-none-linux-gnu -march=armv8-a+sve \
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// RUN: -msve-vector-bits=scalable 2>&1 | FileCheck --check-prefix=CHECK-SCALABLE %s
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// CHECK-128: "-msve-vector-bits=128"
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// CHECK-256: "-msve-vector-bits=256"
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// CHECK-512: "-msve-vector-bits=512"
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// CHECK-1024: "-msve-vector-bits=1024"
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// CHECK-2048: "-msve-vector-bits=2048"
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// CHECK-SCALABLE-NOT: "-msve-vector-bits=
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// Error out if an unsupported value is passed to -msve-vector-bits.
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// -----------------------------------------------------------------------------
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// RUN: %clang -c %s -### -target aarch64-none-linux-gnu -march=armv8-a+sve \
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// RUN: -msve-vector-bits=64 2>&1 | FileCheck --check-prefix=CHECK-BAD-VALUE-ERROR %s
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// RUN: %clang -c %s -### -target aarch64-none-linux-gnu -march=armv8-a+sve \
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// RUN: -msve-vector-bits=A 2>&1 | FileCheck --check-prefix=CHECK-BAD-VALUE-ERROR %s
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// CHECK-BAD-VALUE-ERROR: error: unsupported argument '{{.*}}' to option 'msve-vector-bits='
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// Error if using attribute without -msve-vector-bits
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// -----------------------------------------------------------------------------
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// RUN: not %clang -c %s -o /dev/null -target aarch64-none-linux-gnu \
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// RUN: -march=armv8-a+sve 2>&1 | FileCheck --check-prefix=CHECK-NO-FLAG-ERROR %s
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// RUN: not %clang -c %s -o /dev/null -target aarch64-none-linux-gnu \
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// RUN: -march=armv8-a+sve -msve-vector-bits=scalable 2>&1 | FileCheck --check-prefix=CHECK-NO-FLAG-ERROR %s
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typedef __SVInt32_t svint32_t;
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typedef svint32_t noflag __attribute__((arm_sve_vector_bits(256)));
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// CHECK-NO-FLAG-ERROR: error: 'arm_sve_vector_bits' is only supported when '-msve-vector-bits=<bits>' is specified with a value of 128, 256, 512, 1024 or 2048
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// Error if attribute vector size != -msve-vector-bits
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// -----------------------------------------------------------------------------
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// RUN: not %clang -c %s -o /dev/null -target aarch64-none-linux-gnu \
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// RUN: -march=armv8-a+sve -msve-vector-bits=128 2>&1 | FileCheck --check-prefix=CHECK-BAD-VECTOR-SIZE-ERROR %s
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typedef svint32_t bad_vector_size __attribute__((arm_sve_vector_bits(256)));
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// CHECK-BAD-VECTOR-SIZE-ERROR: error: invalid SVE vector size '256', must match value set by '-msve-vector-bits' ('128')
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