From 02d937d86420409210291accd9aa023d97b4a8b5 Mon Sep 17 00:00:00 2001 From: Pranav Bhandarkar Date: Thu, 2 May 2013 20:22:51 +0000 Subject: Hexagon - Add peephole optimizations for zero extends. * lib/Target/Hexagon/HexagonInstrInfo.td: Add patterns to combine a sequence of a pair of i32->i64 extensions followed by a "bitwise or" into COMBINE_rr. * lib/Target/Hexagon/HexagonPeephole.cpp: Copy propagate Rx in the instruction Rp = COMBINE_Ir_V4(0, Rx) to the uses of Rp:subreg_loreg. * test/CodeGen/Hexagon/union-1.ll: New test. * test/CodeGen/Hexagon/combine_ir.ll: Fix test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180946 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/Hexagon/combine_ir.ll | 7 +------ test/CodeGen/Hexagon/union-1.ll | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+), 6 deletions(-) create mode 100644 test/CodeGen/Hexagon/union-1.ll (limited to 'test') diff --git a/test/CodeGen/Hexagon/combine_ir.ll b/test/CodeGen/Hexagon/combine_ir.ll index 921ce9928e..8b99ef7155 100644 --- a/test/CodeGen/Hexagon/combine_ir.ll +++ b/test/CodeGen/Hexagon/combine_ir.ll @@ -6,12 +6,7 @@ define void @word(i32* nocapture %a) nounwind { entry: %0 = load i32* %a, align 4, !tbaa !0 %1 = zext i32 %0 to i64 - %add.ptr = getelementptr inbounds i32* %a, i32 1 - %2 = load i32* %add.ptr, align 4, !tbaa !0 - %3 = zext i32 %2 to i64 - %4 = shl nuw i64 %3, 32 - %ins = or i64 %4, %1 - tail call void @bar(i64 %ins) nounwind + tail call void @bar(i64 %1) nounwind ret void } diff --git a/test/CodeGen/Hexagon/union-1.ll b/test/CodeGen/Hexagon/union-1.ll new file mode 100644 index 0000000000..7c6da744ec --- /dev/null +++ b/test/CodeGen/Hexagon/union-1.ll @@ -0,0 +1,23 @@ +; RUN: llc -march=hexagon -mcpu=hexagonv4 < %s | FileCheck %s +; CHECK: word +; CHECK-NOT: combine(#0 +; CHECK: jump bar + +define void @word(i32* nocapture %a) nounwind { +entry: + %0 = load i32* %a, align 4, !tbaa !0 + %1 = zext i32 %0 to i64 + %add.ptr = getelementptr inbounds i32* %a, i32 1 + %2 = load i32* %add.ptr, align 4, !tbaa !0 + %3 = zext i32 %2 to i64 + %4 = shl nuw i64 %3, 32 + %ins = or i64 %4, %1 + tail call void @bar(i64 %ins) nounwind + ret void +} + +declare void @bar(i64) + +!0 = metadata !{metadata !"int", metadata !1} +!1 = metadata !{metadata !"omnipotent char", metadata !2} +!2 = metadata !{metadata !"Simple C/C++ TBAA"} -- cgit v1.2.3