[mips] Mark fmaxl as a long double emulation routine

Failure was discovered upon running
projects/compiler-rt/test/builtins/Unit/divtc3_test.c
in a stage2 compiler build.

When compiling projects/compiler-rt/lib/builtins/divtc3.c,
a call to fmaxl within the divtc3 implementation had its
return values read from registers $2 and $3 instead of $f0 and $f2.
Include fmaxl in the list of long double emulation routines
to have its return value correctly interpreted as f128.

Almost exact issue here: https://reviews.llvm.org/D17760

Differential Revision: https://reviews.llvm.org/D52649

llvm-svn: 344326

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/Target/Mips/MipsCCState.cpp b/llvm/lib/Target/Mips/MipsCCState.cpp
index 81a1cced93b..90cb3f437bd 100644
--- a/llvm/lib/Target/Mips/MipsCCState.cpp
+++ b/llvm/lib/Target/Mips/MipsCCState.cpp
@@ -24,10 +24,10 @@ static bool isF128SoftLibCall(const char *CallSym) {
       "__lttf2",       "__multf3",     "__netf2",       "__powitf2",
       "__subtf3",      "__trunctfdf2", "__trunctfsf2",  "__unordtf2",
       "ceill",         "copysignl",    "cosl",          "exp2l",
-      "expl",          "floorl",       "fmal",          "fmodl",
-      "log10l",        "log2l",        "logl",          "nearbyintl",
-      "powl",          "rintl",        "roundl",        "sinl",
-      "sqrtl",         "truncl"};
+      "expl",          "floorl",       "fmal",          "fmaxl",
+      "fmodl",         "log10l",       "log2l",         "logl",
+      "nearbyintl",    "powl",         "rintl",         "roundl",
+      "sinl",          "sqrtl",        "truncl"};
 
   // Check that LibCalls is sorted alphabetically.
   auto Comp = [](const char *S1, const char *S2) { return strcmp(S1, S2) < 0; };