================
@@ -1206,6 +1233,47 @@ std::string Triple::normalize(StringRef Str) {
}
}
+ // Normalize DXIL triple if it does not include DXIL version number.
+ // Determine DXIL version number using the minor version number of Shader
+ // Model version specified in target triple, if any. Prior to decoupling DXIL
+ // version numbering from that of Shader Model DXIL version 1.Y corresponds
to
+ // SM 6.Y. E.g., dxilv1.Y-unknown-shadermodelX.Y-hull
+ if (Components[0] == "dxil") {
+ if (Components.size() > 4) {
+ Components.resize(4);
+ }
+ // Add DXIL version only if shadermodel is specified in the triple
+ if (OS == Triple::ShaderModel) {
+ VersionTuple Ver =
+
parseVersionFromName(Components[2].drop_front(strlen("shadermodel")));
+ // Default DXIL minor version when Shader Model version is anything other
+ // than 6.[0...8] or 6.x (which translates to latest current SM version)
+ // DXIL version corresponding to Shader Model version other than 6.x
+ // is 1.0
+ unsigned DXILMinor = 0;
+ const unsigned SMMajor = 6;
+ const unsigned LatestCurrentDXILMinor = 8;
+ if (!Ver.empty()) {
+ if (Ver.getMajor() == SMMajor) {
+ if (std::optional<unsigned> SMMinor = Ver.getMinor()) {
+ DXILMinor = *SMMinor;
+ // Ensure specified minor version is supported
+ if (DXILMinor > LatestCurrentDXILMinor) {
+ report_fatal_error("Unsupported Shader Model version", false);
+ }
+ }
+ }
+ } else {
+ // Special case: DXIL minor version is set to LatestCurrentDXILMinor
for
+ // shadermodel6.x is
+ if (Components[2] == "shadermodel6.x") {
+ DXILMinor = LatestCurrentDXILMinor;
+ }
+ }
+ Components[0] =
+ Components[0].str().append("v1.").append(std::to_string(DXILMinor));
----------------
llvm-beanz wrote:
@bharadwajy this is your asan failure. You’re setting a stringref to a locally
modified string temporary.
https://github.com/llvm/llvm-project/pull/90809
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