From ec7063ac7712f82c6ff62c75ffc8ed02db6dbf58 Mon Sep 17 00:00:00 2001 From: Silviu Baranga Date: Mon, 15 Feb 2016 15:38:17 +0000 Subject: [LV] Add support for insertelt/extractelt processing during type truncation Summary: While shrinking types according to the required bits, we can encounter insert/extract element instructions. This will cause us to reach an llvm_unreachable statement. This change adds support for truncating insert/extract element operations, and adds a regression test. Reviewers: jmolloy Subscribers: mzolotukhin, llvm-commits Differential Revision: http://reviews.llvm.org/D17078 llvm-svn: 260893 --- .../AArch64/type-shrinkage-insertelt.ll | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 llvm/test/Transforms/LoopVectorize/AArch64/type-shrinkage-insertelt.ll (limited to 'llvm/test/Transforms/LoopVectorize') diff --git a/llvm/test/Transforms/LoopVectorize/AArch64/type-shrinkage-insertelt.ll b/llvm/test/Transforms/LoopVectorize/AArch64/type-shrinkage-insertelt.ll new file mode 100644 index 00000000000..ffe8480138d --- /dev/null +++ b/llvm/test/Transforms/LoopVectorize/AArch64/type-shrinkage-insertelt.ll @@ -0,0 +1,47 @@ +; RUN: opt -S < %s -loop-vectorize -force-vector-width=4 | FileCheck %s + +target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128" +target triple = "aarch64--linux-gnu" + +; CHECK-LABEL: test0 +define void @test0(i16* noalias %M3) { +entry: + br label %if.then1165.us + +if.then1165.us: ; preds = %if.then1165.us, %entry + %indvars.iv1783 = phi i64 [ 0, %entry ], [ %indvars.iv.next1784, %if.then1165.us ] + %conv1177.us = zext i16 undef to i32 + %add1178.us = add nsw i32 %conv1177.us, undef + %conv1179.us = trunc i32 %add1178.us to i16 + %idxprom1181.us = ashr exact i64 undef, 32 + %arrayidx1185.us = getelementptr inbounds i16, i16* %M3, i64 %idxprom1181.us + store i16 %conv1179.us, i16* %arrayidx1185.us, align 2 + %indvars.iv.next1784 = add nuw nsw i64 %indvars.iv1783, 1 + %exitcond1785 = icmp eq i64 %indvars.iv.next1784, 16 + br i1 %exitcond1785, label %for.inc1286.loopexit, label %if.then1165.us + +for.inc1286.loopexit: ; preds = %if.then1165.us + ret void +} + +; CHECK-LABEL: test1 +define void @test1(i16* noalias %M3) { +entry: + br label %if.then1165.us + +if.then1165.us: ; preds = %if.then1165.us, %entry + %indvars.iv1783 = phi i64 [ 0, %entry ], [ %indvars.iv.next1784, %if.then1165.us ] + %fptr = load i32, i32* undef, align 4 + %conv1177.us = zext i16 undef to i32 + %add1178.us = add nsw i32 %conv1177.us, %fptr + %conv1179.us = trunc i32 %add1178.us to i16 + %idxprom1181.us = ashr exact i64 undef, 32 + %arrayidx1185.us = getelementptr inbounds i16, i16* %M3, i64 %idxprom1181.us + store i16 %conv1179.us, i16* %arrayidx1185.us, align 2 + %indvars.iv.next1784 = add nuw nsw i64 %indvars.iv1783, 1 + %exitcond1785 = icmp eq i64 %indvars.iv.next1784, 16 + br i1 %exitcond1785, label %for.inc1286.loopexit, label %if.then1165.us + +for.inc1286.loopexit: ; preds = %if.then1165.us + ret void +} -- cgit v1.2.3