commit 7cecadb9afdff13b6e2e23b3a3966de9e94af05d
author Petar Avramovic <Petar.Avramovic@rt-rk.com> Mon Jan 28 12:10:17 2019 +0000
committer Petar Avramovic <Petar.Avramovic@rt-rk.com> Mon Jan 28 12:10:17 2019 +0000
tree 6c117eac69ad482866500ccef0d99c7e86e7c475
parent 8ebffb4b82ef5b4ae230fc3893e56314c3dede95

[MIPS GlobalISel] Select sub

Lower G_USUBO and G_USUBE. Add narrowScalar for G_SUB.
Legalize and select G_SUB for MIPS 32.

Differential Revision: https://reviews.llvm.org/D53416

llvm-svn: 352351

llvm/lib/Target/Mips/MipsLegalizerInfo.cpp

diff --git a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
index ceab690..29c90ef 100644
--- a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
@@ -24,11 +24,11 @@
   const LLT s64 = LLT::scalar(64);
   const LLT p0 = LLT::pointer(0, 32);
 
-  getActionDefinitionsBuilder(G_ADD)
+  getActionDefinitionsBuilder({G_ADD, G_SUB})
       .legalFor({s32})
       .clampScalar(0, s32, s32);
 
-  getActionDefinitionsBuilder(G_UADDE)
+  getActionDefinitionsBuilder({G_UADDE, G_USUBO, G_USUBE})
       .lowerFor({{s32, s1}});
 
   getActionDefinitionsBuilder({G_LOAD, G_STORE})

llvm/lib/Target/Mips/MipsRegisterBankInfo.cpp

diff --git a/llvm/lib/Target/Mips/MipsRegisterBankInfo.cpp b/llvm/lib/Target/Mips/MipsRegisterBankInfo.cpp
index 592cf56..03360ad 100644
--- a/llvm/lib/Target/Mips/MipsRegisterBankInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsRegisterBankInfo.cpp
@@ -82,7 +82,9 @@
   const ValueMapping *OperandsMapping = &Mips::ValueMappings[Mips::GPRIdx];
 
   switch (Opc) {
+  case G_TRUNC:
   case G_ADD:
+  case G_SUB:
   case G_LOAD:
   case G_STORE:
   case G_ZEXTLOAD: