llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT--> @llvm/pr-subscribers-backend-hexagon Author: None (llvmbot) <details> <summary>Changes</summary> Backport fcabb53 Requested by: @<!-- -->svs-quic --- Full diff: https://github.com/llvm/llvm-project/pull/149773.diff 2 Files Affected: - (modified) llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp (+9) - (added) llvm/test/CodeGen/Hexagon/mpy-operand-hoist.ll (+38) ``````````diff diff --git a/llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp b/llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp index 53943de3bc597..e285e04543694 100644 --- a/llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp +++ b/llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp @@ -1640,6 +1640,15 @@ bool HexagonDAGToDAGISel::DetectUseSxtw(SDValue &N, SDValue &R) { R = N; break; } + case ISD::AssertSext: { + EVT T = cast<VTSDNode>(N.getOperand(1))->getVT(); + if (T.getSizeInBits() == 32) + R = N.getOperand(0); + else + return false; + break; + } + default: return false; } diff --git a/llvm/test/CodeGen/Hexagon/mpy-operand-hoist.ll b/llvm/test/CodeGen/Hexagon/mpy-operand-hoist.ll new file mode 100644 index 0000000000000..ff50f1abe5897 --- /dev/null +++ b/llvm/test/CodeGen/Hexagon/mpy-operand-hoist.ll @@ -0,0 +1,38 @@ +; RUN: llc -march=hexagon -verify-machineinstrs < %s | FileCheck %s + +; CHECK-NOT: r{{[0-9]+}} = asr(r{{[0-9]+}},#{{[0-9]+}}) +; CHECK-NOT: r{{[0-9]+}}:{{[0-9]+}} = mpyu(r{{[0-9]+}},r{{[0-9]+}}) +; CHECK-NOT: r{{[0-9]+}} += mpyi(r{{[0-9]+}},r{{[0-9]+}}) +; CHECK: r{{[0-9]+}}:{{[0-9]+}} = mpy(r{{[0-9]+}},r{{[0-9]+}}) + +; ModuleID = '39544.c' +source_filename = "39544.c" +target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048" +target triple = "hexagon" + +define dso_local void @mul_n(i64* nocapture %p, i32* nocapture readonly %a, i32 %k, i32 %n) local_unnamed_addr { +entry: + %cmp7 = icmp sgt i32 %n, 0 + br i1 %cmp7, label %for.body.lr.ph, label %for.cond.cleanup + +for.body.lr.ph: ; preds = %entry + %conv1 = sext i32 %k to i64 + br label %for.body + +for.cond.cleanup: ; preds = %for.body, %entry + ret void + +for.body: ; preds = %for.body, %for.body.lr.ph + %arrayidx.phi = phi i32* [ %a, %for.body.lr.ph ], [ %arrayidx.inc, %for.body ] + %arrayidx2.phi = phi i64* [ %p, %for.body.lr.ph ], [ %arrayidx2.inc, %for.body ] + %i.08 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] + %0 = load i32, i32* %arrayidx.phi, align 4 + %conv = sext i32 %0 to i64 + %mul = mul nsw i64 %conv, %conv1 + store i64 %mul, i64* %arrayidx2.phi, align 8 + %inc = add nuw nsw i32 %i.08, 1 + %exitcond = icmp eq i32 %inc, %n + %arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1 + %arrayidx2.inc = getelementptr i64, i64* %arrayidx2.phi, i32 1 + br i1 %exitcond, label %for.cond.cleanup, label %for.body +} `````````` </details> https://github.com/llvm/llvm-project/pull/149773 _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
