[MIPS GlobalISel] Select G_SDIV, G_UDIV, G_SREM and G_UREM

Add support for s64 libcalls for G_SDIV, G_UDIV, G_SREM and G_UREM
and use integer type of correct size when creating arguments for
CLI.lowerCall.
Select G_SDIV, G_UDIV, G_SREM and G_UREM for types s8, s16, s32 and s64
on MIPS32.

Differential Revision: https://reviews.llvm.org/D55651

llvm-svn: 349499

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
index 9178ac874c5..0d80bd479d5 100644
--- a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
@@ -22,6 +22,7 @@ MipsLegalizerInfo::MipsLegalizerInfo(const MipsSubtarget &ST) {
 
   const LLT s1 = LLT::scalar(1);
   const LLT s32 = LLT::scalar(32);
+  const LLT s64 = LLT::scalar(64);
   const LLT p0 = LLT::pointer(0, 32);
 
   getActionDefinitionsBuilder(G_ADD)
@@ -41,6 +42,11 @@ MipsLegalizerInfo::MipsLegalizerInfo(const MipsSubtarget &ST) {
   getActionDefinitionsBuilder({G_SHL, G_ASHR, G_LSHR})
       .legalFor({s32});
 
+  getActionDefinitionsBuilder({G_SDIV, G_SREM, G_UREM, G_UDIV})
+      .legalFor({s32})
+      .minScalar(0, s32)
+      .libcallFor({s64});
+
   getActionDefinitionsBuilder(G_ICMP)
       .legalFor({{s32, s32}})
       .minScalar(0, s32);