0a35211b34
The 'r' constraint uses the GPR class. There is generic support for bitcasting and extending/truncating non-integer VTs to the required integer VT. This doesn't work for scalable vectors and instead crashes. To prevent this, explicitly reject vectors. Fixed vectors might work without crashing, but it doesn't seem worthwhile to allow. While there remove an unnecessary level of indentation in the "vr" and "vm" constraint handling. Differential Revision: https://reviews.llvm.org/D115810
45 lines
1.5 KiB
LLVM
45 lines
1.5 KiB
LLVM
; RUN: not llc -mtriple=riscv32 < %s 2>&1 | FileCheck %s
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; RUN: not llc -mtriple=riscv64 < %s 2>&1 | FileCheck %s
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define void @constraint_I() {
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; CHECK: error: value out of range for constraint 'I'
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tail call void asm sideeffect "addi a0, a0, $0", "I"(i32 2048)
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; CHECK: error: value out of range for constraint 'I'
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tail call void asm sideeffect "addi a0, a0, $0", "I"(i32 -2049)
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ret void
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}
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define void @constraint_J() {
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; CHECK: error: value out of range for constraint 'J'
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tail call void asm sideeffect "addi a0, a0, $0", "J"(i32 1)
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ret void
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}
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define void @constraint_K() {
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; CHECK: error: value out of range for constraint 'K'
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tail call void asm sideeffect "csrwi mstatus, $0", "K"(i32 32)
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; CHECK: error: value out of range for constraint 'K'
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tail call void asm sideeffect "csrwi mstatus, $0", "K"(i32 -1)
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ret void
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}
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define void @constraint_f() nounwind {
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; CHECK: error: couldn't allocate input reg for constraint 'f'
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tail call void asm "fadd.s fa0, fa0, $0", "f"(float 0.0)
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; CHECK: error: couldn't allocate input reg for constraint 'f'
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tail call void asm "fadd.d fa0, fa0, $0", "f"(double 0.0)
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ret void
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}
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define void @constraint_r_fixed_vec() nounwind {
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; CHECK: error: couldn't allocate input reg for constraint 'r'
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tail call void asm "add a0, a0, $0", "r"(<4 x i32> zeroinitializer)
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ret void
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}
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define void @constraint_r_scalable_vec() nounwind {
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; CHECK: error: couldn't allocate input reg for constraint 'r'
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tail call void asm "add a0, a0, $0", "r"(<vscale x 4 x i32> zeroinitializer)
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ret void
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}
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