From 6b1207267f01877ff9b351786c902cb2ecd354c0 Mon Sep 17 00:00:00 2001 From: Andrew Trick Date: Wed, 8 Dec 2010 20:04:29 +0000 Subject: Generalize PostRAHazardRecognizer so it can be used in any pass for both forward and backward scheduling. Rename it to ScoreboardHazardRecognizer (Scoreboard is one word). Remove integer division from the scoreboard's critical path. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121274 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/ARM/ARMHazardRecognizer.cpp | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'lib/Target/ARM/ARMHazardRecognizer.cpp') diff --git a/lib/Target/ARM/ARMHazardRecognizer.cpp b/lib/Target/ARM/ARMHazardRecognizer.cpp index 317934faec..b8d385b6e3 100644 --- a/lib/Target/ARM/ARMHazardRecognizer.cpp +++ b/lib/Target/ARM/ARMHazardRecognizer.cpp @@ -68,14 +68,14 @@ ARMHazardRecognizer::getHazardType(SUnit *SU) { } } - return PostRAHazardRecognizer::getHazardType(SU); + return ScoreboardHazardRecognizer::getHazardType(SU); } void ARMHazardRecognizer::Reset() { LastMI = 0; Stalls = 0; ITBlockSize = 0; - PostRAHazardRecognizer::Reset(); + ScoreboardHazardRecognizer::Reset(); } void ARMHazardRecognizer::EmitInstruction(SUnit *SU) { @@ -103,12 +103,16 @@ void ARMHazardRecognizer::EmitInstruction(SUnit *SU) { Stalls = 0; } - PostRAHazardRecognizer::EmitInstruction(SU); + ScoreboardHazardRecognizer::EmitInstruction(SU); } void ARMHazardRecognizer::AdvanceCycle() { if (Stalls && --Stalls == 0) // Stalled for 4 cycles but still can't schedule any other instructions. LastMI = 0; - PostRAHazardRecognizer::AdvanceCycle(); + ScoreboardHazardRecognizer::AdvanceCycle(); +} + +void ARMHazardRecognizer::RecedeCycle() { + llvm_unreachable("reverse ARM hazard checking unsupported"); } -- cgit v1.2.3