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| author | Nadav Rotem <nrotem@apple.com> | 2013-05-22 19:28:41 +0000 |
|---|---|---|
| committer | Nadav Rotem <nrotem@apple.com> | 2013-05-22 19:28:41 +0000 |
| commit | 23d1d5eb566dbd10a81d9ce2dc67ad1548110b08 (patch) | |
| tree | b687c6c0a3b4fb2475edc0af43d596f96452f2ae /test | |
| parent | 9e8dbe0d2de41d9f993d07f438f5f967fdfd9974 (diff) | |
| download | external_llvm-23d1d5eb566dbd10a81d9ce2dc67ad1548110b08.zip external_llvm-23d1d5eb566dbd10a81d9ce2dc67ad1548110b08.tar.gz external_llvm-23d1d5eb566dbd10a81d9ce2dc67ad1548110b08.tar.bz2 | |
X86: Fix a bug in EltsFromConsecutiveLoads. We can't generate new loads without chains.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182507 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/chain_order.ll | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/test/CodeGen/X86/chain_order.ll b/test/CodeGen/X86/chain_order.ll new file mode 100644 index 0000000..056fd27 --- /dev/null +++ b/test/CodeGen/X86/chain_order.ll @@ -0,0 +1,38 @@ +; RUN: llc < %s -mcpu=corei7-avx -mtriple=x86_64-linux | FileCheck %s + +;CHECK: cftx020 +;CHECK: vmovsd (%rdi), %xmm{{.*}} +;CHECK: vmovsd 16(%rdi), %xmm{{.*}} +;CHECK: vmovhpd 8(%rdi), %xmm{{.*}} +;CHECK: vmovsd 24(%rdi), %xmm{{.*}} +;CHECK: vmovupd %xmm{{.*}}, (%rdi) +;CHECK: vmovupd %xmm{{.*}}, 16(%rdi) +;CHECK: ret + +; A test from pifft (after SLP-vectorization) that fails when we drop the chain on newly merged loads. +define void @cftx020(double* nocapture %a) { +entry: + %0 = load double* %a, align 8 + %arrayidx1 = getelementptr inbounds double* %a, i64 2 + %1 = load double* %arrayidx1, align 8 + %arrayidx2 = getelementptr inbounds double* %a, i64 1 + %2 = load double* %arrayidx2, align 8 + %arrayidx3 = getelementptr inbounds double* %a, i64 3 + %3 = load double* %arrayidx3, align 8 + %4 = insertelement <2 x double> undef, double %0, i32 0 + %5 = insertelement <2 x double> %4, double %3, i32 1 + %6 = insertelement <2 x double> undef, double %1, i32 0 + %7 = insertelement <2 x double> %6, double %2, i32 1 + %8 = fadd <2 x double> %5, %7 + %9 = bitcast double* %a to <2 x double>* + store <2 x double> %8, <2 x double>* %9, align 8 + %10 = insertelement <2 x double> undef, double %0, i32 0 + %11 = insertelement <2 x double> %10, double %2, i32 1 + %12 = insertelement <2 x double> undef, double %1, i32 0 + %13 = insertelement <2 x double> %12, double %3, i32 1 + %14 = fsub <2 x double> %11, %13 + %15 = bitcast double* %arrayidx1 to <2 x double>* + store <2 x double> %14, <2 x double>* %15, align 8 + ret void +} + |