Ptr, ST->getPointerInfo(), ST->isVolatile(),
ST->isNonTemporal(), OrigAlign);
}
+
+ // Turn 'store undef, Ptr' -> nothing.
+ if (Value.getOpcode() == ISD::UNDEF && ST->isUnindexed())
+ return Chain;
// Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr'
if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(Value)) {
return DAG.getStore(Chain, N->getDebugLoc(), Tmp,
Ptr, ST->getPointerInfo(), ST->isVolatile(),
ST->isNonTemporal(), ST->getAlignment());
- } else if (!ST->isVolatile() &&
- TLI.isOperationLegalOrCustom(ISD::STORE, MVT::i32)) {
+ }
+
+ if (!ST->isVolatile() &&
+ TLI.isOperationLegalOrCustom(ISD::STORE, MVT::i32)) {
// Many FP stores are not made apparent until after legalize, e.g. for
// argument passing. Since this is so common, custom legalize the
// 64-bit integer store into two 32-bit stores.
}
declare i32 @f(%struct.decode_t*)
+
+
+; There should be no store for the undef operand.
+
+; CHECK: _test2:
+; CHECK-NOT: 8(%esp)
+; CHECK: 4(%esp)
+; CHECK: calll
+declare i32 @foo(i32, i32, i32)
+
+define void @test2() nounwind {
+entry:
+ %call = call i32 @foo(i32 8, i32 6, i32 undef)
+ ret void
+}