ARM64: Use the shifter operands.
This introduces architecture-specific instruction simplification.
On ARM64 we try to merge shifts and sign-extension operations into
arithmetic and logical instructions.
For example for the Java code
int res = a + (b << 5);
we would generate
lsl w3, w2, #5
add w0, w1, w3
and we now generate
add w0, w1, w2, lsl #5
Change-Id: Ic03bdff44a1c12e21ddff1b0513bd32a730742b7
diff --git a/compiler/optimizing/graph_visualizer.cc b/compiler/optimizing/graph_visualizer.cc
index 4438190..48bcd10 100644
--- a/compiler/optimizing/graph_visualizer.cc
+++ b/compiler/optimizing/graph_visualizer.cc
@@ -423,6 +423,13 @@
}
#ifdef ART_ENABLE_CODEGEN_arm64
+ void VisitArm64DataProcWithShifterOp(HArm64DataProcWithShifterOp* instruction) OVERRIDE {
+ StartAttributeStream("kind") << instruction->GetInstrKind() << "+" << instruction->GetOpKind();
+ if (HArm64DataProcWithShifterOp::IsShiftOp(instruction->GetOpKind())) {
+ StartAttributeStream("shift") << instruction->GetShiftAmount();
+ }
+ }
+
void VisitArm64MultiplyAccumulate(HArm64MultiplyAccumulate* instruction) OVERRIDE {
StartAttributeStream("kind") << instruction->GetOpKind();
}