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Improve implicit widening conversion to unsigned integer

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This commit is contained in:
Svyatoslav Scherbina
2018-08-24 16:36:15 +03:00
committed by SvyatoslavScherbina
parent 62bbfcebd8
commit 872deb205c
1 changed files with 2 additions and 5 deletions
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backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/IrToBitcode.kt
+2 -5
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@@ -1272,8 +1272,7 @@ internal class CodeGeneratorVisitor(val context: Context, val lifetimes: Map<IrE
private fun evaluateIntegerCoercion(value: IrTypeOperatorCall): LLVMValueRef {
context.log{"evaluateIntegerCoercion : ${ir2string(value)}"}
val type = value.typeOperand
val typeIsUnsigned = type.isUnsignedInteger()
assert(type.isPrimitiveInteger() || typeIsUnsigned)
assert(type.isPrimitiveInteger() || type.isUnsignedInteger())
val result = evaluateExpression(value.argument)
assert(value.argument.type.isInt())
val llvmSrcType = codegen.getLLVMType(value.argument.type)
@@ -1283,9 +1282,7 @@ internal class CodeGeneratorVisitor(val context: Context, val lifetimes: Map<IrE
return when {
srcWidth == dstWidth -> result
srcWidth > dstWidth -> LLVMBuildTrunc(functionGenerationContext.builder, result, llvmDstType, "")!!
/* srcWidth < dstWidth */
typeIsUnsigned -> LLVMBuildZExt(functionGenerationContext.builder, result, llvmDstType, "")!!
else -> LLVMBuildSExt(functionGenerationContext.builder, result, llvmDstType, "")!!
else /* srcWidth < dstWidth */ -> LLVMBuildSExt(functionGenerationContext.builder, result, llvmDstType, "")!!
}
}