[RISCV][GISel] Legalize G_SADDO/G_SSUBO/G_UADDO/G_USUBO. (#67615)

llvm · Sep 30, 2023 · e39727d · e39727d
1 parent 4bae636
commit e39727d
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Showing 3 changed files with 1,114 additions and 3 deletions.
diff --git a/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp b/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
@@ -25,7 +25,6 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST) {
   const LLT XLenLLT = LLT::scalar(XLen);
   const LLT DoubleXLenLLT = LLT::scalar(2 * XLen);
   const LLT p0 = LLT::pointer(0, XLen);
-  const LLT s1 = LLT::scalar(1);
   const LLT s8 = LLT::scalar(8);
   const LLT s16 = LLT::scalar(16);
   const LLT s32 = LLT::scalar(32);
@@ -43,8 +42,9 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST) {
       .clampScalar(0, s32, XLenLLT);
 
   getActionDefinitionsBuilder(
-      {G_UADDE, G_UADDO, G_USUBE, G_USUBO})
-      .lowerFor({{XLenLLT, s1}});
+      {G_UADDE, G_UADDO, G_USUBE, G_USUBO}).lower();
+
+  getActionDefinitionsBuilder({G_SADDO, G_SSUBO}).minScalar(0, XLenLLT).lower();
 
   getActionDefinitionsBuilder({G_ASHR, G_LSHR, G_SHL})
       .legalFor({{s32, s32}, {XLenLLT, XLenLLT}})