[clang] [llvm] MIPS/clang: Fix asm constraint for softfloat (PR #79116)

[Fangrui Song via cfe-commits]

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@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 -triple mips -target-feature +soft-float -DSOFT_FLOAT_NO_CONSTRAINT_F -fsyntax-only -verify %s
+
+#ifdef SOFT_FLOAT_NO_CONSTRAINT_F
+void read_float(float* p) {
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MaskRay wrote:

Can just use argument `float p`?

https://github.com/llvm/llvm-project/pull/79116