Improve error message on unsupported type usage. (#513)

Author: maleadt

src/validation.jl

@@ -312,7 +312,7 @@ function check_ir_values(mod::LLVM.Module, T_bad::LLVMType)
     for fun in functions(mod), bb in blocks(fun), inst in instructions(bb)
         if value_type(inst) == T_bad || any(param->value_type(param) == T_bad, operands(inst))
             bt = backtrace(inst)
-            push!(errors, ("unsupported use of $(string(T_bad)) value", bt, inst))
+            push!(errors, ("use of $(string(T_bad)) value", bt, inst))
         end
     end
 

test/spirv_tests.jl

@@ -54,15 +54,15 @@ end
     @test_throws_message(InvalidIRError,
                          SPIRV.code_llvm(devnull, kernel, Tuple{Ptr{Float16}, Float16};
                                          supports_fp16=false, validate=true)) do msg
-        occursin("unsupported unsupported use of half value", msg) &&
+        occursin("unsupported use of half value", msg) &&
         occursin("[1] unsafe_store!", msg) &&
         occursin(r"\[2\] .*kernel", msg)
     end
 
     @test_throws_message(InvalidIRError,
                          SPIRV.code_llvm(devnull, kernel, Tuple{Ptr{Float64}, Float64};
                                          supports_fp64=false, validate=true)) do msg
-        occursin("unsupported unsupported use of double value", msg) &&
+        occursin("unsupported use of double value", msg) &&
         occursin("[1] unsafe_store!", msg) &&
         occursin(r"\[2\] .*kernel", msg)
     end