[libunwind] [libunwind][MIPS] Add o32 single-float support (PR #218994)

[Ying Huang via cfe-commits]

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@@ -3187,7 +3221,11 @@ inline double Registers_mips_o32::getFloatRegister(int regNum) const {
 
 inline void Registers_mips_o32::setFloatRegister(int regNum,
                                                  double value) {
-#if defined(__mips_hard_float) && __mips_fpr == 64
+#if defined(__mips_hard_float) && defined(__mips_single_float)
+  assert(validFloatRegister(regNum));
+  float single = static_cast<float>(value);
+  memcpy(&_floats[regNum - UNW_MIPS_F0], &single, sizeof(single));
+#elif defined(__mips_hard_float) && __mips_fpr == 64
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yingopq wrote:

Likewise.

https://github.com/llvm/llvm-project/pull/218994