Handle stores of global address as stores of immediates. Instead of:
test1:
movl $N, %eax
movl %eax, G
ret
emit:
test1:
movl $N, G
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21407 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelSimple.cpp b/lib/Target/X86/X86ISelSimple.cpp
index 6c37b70..b7e1520 100644
--- a/lib/Target/X86/X86ISelSimple.cpp
+++ b/lib/Target/X86/X86ISelSimple.cpp
@@ -1620,6 +1620,9 @@
} else if (Args[i].Val && isa<ConstantPointerNull>(Args[i].Val)) {
addRegOffset(BuildMI(BB, X86::MOV32mi, 5),
X86::ESP, ArgOffset).addImm(0);
+ } else if (Args[i].Val && isa<GlobalValue>(Args[i].Val)) {
+ addRegOffset(BuildMI(BB, X86::MOV32mi, 5), X86::ESP, ArgOffset)
+ .addGlobalAddress(cast<GlobalValue>(Args[i].Val));
} else {
ArgReg = Args[i].Val ? getReg(Args[i].Val) : Args[i].Reg;
addRegOffset(BuildMI(BB, X86::MOV32mr, 5),
@@ -3311,6 +3314,8 @@
}
} else if (isa<ConstantPointerNull>(I.getOperand(0))) {
addFullAddress(BuildMI(BB, X86::MOV32mi, 5), AM).addImm(0);
+ } else if (GlobalValue *GV = dyn_cast<GlobalValue>(I.getOperand(0))) {
+ addFullAddress(BuildMI(BB, X86::MOV32mi, 5), AM).addGlobalAddress(GV);
} else if (ConstantBool *CB = dyn_cast<ConstantBool>(I.getOperand(0))) {
addFullAddress(BuildMI(BB, X86::MOV8mi, 5), AM).addImm(CB->getValue());
} else if (ConstantFP *CFP = dyn_cast<ConstantFP>(I.getOperand(0))) {