================
@@ -1444,15 +1444,16 @@ void clang::emitBackendOutput(CompilerInstance &CI,
CodeGenOptions &CGOpts,
// Verify clang's TargetInfo DataLayout against the LLVM TargetMachine's
// DataLayout.
- if (AsmHelper.TM) {
- std::string DLDesc = M->getDataLayout().getStringRepresentation();
- if (DLDesc != TDesc) {
+ if (AsmHelper.TM)
+ if (!AsmHelper.TM->isCompatibleDataLayout(M->getDataLayout()) ||
+ !AsmHelper.TM->isCompatibleDataLayout(DataLayout(TDesc))) {
+ std::string DLDesc = M->getDataLayout().getStringRepresentation();
----------------
thetheodor wrote:
For example:
```
/usr/bin/python3 /work/llvm-project/build/./bin/llvm-lit -vv
/work/llvm-project/clang/test/CodeGenCUDA/bf16.cu
...
error: backend data layout
'e-p6:32:32-i64:64-i128:128-v16:16-v32:32-n16:32:64-A5' does not match expected
target description 'e-p6:32:32-i64:64-i128:128-v16:16-v32:32-n16:32:64'
1 error generated when compiling for .
```
it's failing because the `-A5` part was not part of the initial data layout
https://github.com/llvm/llvm-project/pull/154814
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