[clang] [PowerPC] fix float ABI selection on ppcle (PR #154773)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-codegen

Author: None (DanilaZhebryakov)

<details>
<summary>Changes</summary>

soft float ABI selection was not taking effect on little-endian powerPC with embedded vectors (e.g. e500v2) leading to errors.
(embedded vectors use "extended" GPRs to store floating-point values, and this caused issues with variadic arguments assuming dedicated floating-point registers with hard-float ABI)

---
Full diff: https://github.com/llvm/llvm-project/pull/154773.diff


1 Files Affected:

- (modified) clang/lib/CodeGen/CodeGenModule.cpp (+2-1) 


``````````diff
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 677d8bc82cb0a..8b85b93b5d568 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -188,7 +188,8 @@ createTargetCodeGenInfo(CodeGenModule &CGM) {
     return createPPC32TargetCodeGenInfo(CGM, IsSoftFloat);
   }
   case llvm::Triple::ppcle: {
-    bool IsSoftFloat = CodeGenOpts.FloatABI == "soft";
+    bool IsSoftFloat =
+        CodeGenOpts.FloatABI == "soft" || Target.hasFeature("spe");
     return createPPC32TargetCodeGenInfo(CGM, IsSoftFloat);
   }
   case llvm::Triple::ppc64:

``````````

</details>


https://github.com/llvm/llvm-project/pull/154773