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226ceebfa2
The backend has a fatal error in RISCVSubtarget::getMinRVVVectorSizeInBits if RVVVectorBitsMin is less than the Zvl length from -march. Now RVVVectorBitsMin is connected to VScaleRange in the backend, we can trip this fatal error. This patch adds the Zvl*b length as a lower bound to protect this. The test is updated to test vscale-min with Zvl64b instead of V. I'd like to do a proper diagnostic for this, but I don't think we can do that from this function. Since -mvscale-min is an internal cc1 option, I'm not sure it's a big deal. I'm planning to add a driver option -msve-vector-bits. I will probably implement a diagnostic for that. Reviewed By: kito-cheng Differential Revision: https://reviews.llvm.org/D141459
29 lines
3.1 KiB
C
29 lines
3.1 KiB
C
// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +zve64x -mvscale-min=1 -mvscale-max=1 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=1
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -mvscale-min=2 -mvscale-max=2 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=2
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -mvscale-min=4 -mvscale-max=4 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=4
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -mvscale-min=8 -mvscale-max=8 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=8
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -mvscale-min=16 -mvscale-max=16 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=16
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +zve64x -mvscale-min=1 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=1 --check-prefix=CHECK-NOMAX
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -mvscale-min=2 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=2 --check-prefix=CHECK-NOMAX
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -mvscale-min=4 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=4 --check-prefix=CHECK-NOMAX
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -mvscale-min=8 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=8 --check-prefix=CHECK-NOMAX
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -mvscale-min=16 -S -emit-llvm -o - %s | FileCheck %s -D#VBITS=16 --check-prefix=CHECK-NOMAX
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +zve64x -mvscale-min=1 -mvscale-max=0 -S -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-UNBOUNDED
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -S -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-V
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +v -target-feature +zvl512b -S -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-ZVL
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +zve64x -S -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-ZVE64
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +zve64f -target-feature +f -S -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-ZVE64
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +zve64d -target-feature +f -target-feature +d -S -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-ZVE64
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +zve32x -S -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-ZVE32
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// CHECK-LABEL: @func() #0
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// CHECK: attributes #0 = { {{.*}} vscale_range([[#VBITS]],[[#VBITS]]) {{.*}} }
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// CHECK-NOMAX: attributes #0 = { {{.*}} vscale_range([[#VBITS]],0) {{.*}} }
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// CHECK-UNBOUNDED: attributes #0 = { {{.*}} vscale_range(1,0) {{.*}} }
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// CHECK-V: attributes #0 = { {{.*}} vscale_range(2,1024) {{.*}} }
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// CHECK-ZVL: attributes #0 = { {{.*}} vscale_range(8,1024) {{.*}} }
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// CHECK-ZVE64: attributes #0 = { {{.*}} vscale_range(1,1024) {{.*}} }
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// CHECK-ZVE32: attributes #0
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// CHECK-ZVE32-NOT: vscale_range
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void func(void) {}
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