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Don't vectorize when the attribute NoImplicitFloat is used.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187340 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem 2013-07-29 05:13:00 +00:00
parent 15658b2908
commit 3202f6cdb9
2 changed files with 30 additions and 0 deletions
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5
lib/Transforms/Vectorize/SLPVectorizer.cpp
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@ -1557,6 +1557,11 @@ struct SLPVectorizer : public FunctionPass {
if (!DL)
return false;
// Don't vectorize when the attribute NoImplicitFloat is used.
if (F.getAttributes().hasAttribute(AttributeSet::FunctionIndex,
Attribute::NoImplicitFloat))
return false;
DEBUG(dbgs() << "SLP: Analyzing blocks in " << F.getName() << ".\n");
// Use the bollom up slp vectorizer to construct chains that start with

25
test/Transforms/SLPVectorizer/X86/implicitfloat.ll Normal file
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@ -0,0 +1,25 @@
; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.8.0"
; Don't vectorize when noimplicitfloat is used.
; CHECK: test1
; CHECK-NOT: store <2 x double>
; CHECK: ret
define void @test1(double* %a, double* %b, double* %c) noimplicitfloat { ; <------ noimplicitfloat attribute here!
entry:
%i0 = load double* %a, align 8
%i1 = load double* %b, align 8
%mul = fmul double %i0, %i1
%arrayidx3 = getelementptr inbounds double* %a, i64 1
%i3 = load double* %arrayidx3, align 8
%arrayidx4 = getelementptr inbounds double* %b, i64 1
%i4 = load double* %arrayidx4, align 8
%mul5 = fmul double %i3, %i4
store double %mul, double* %c, align 8
%arrayidx5 = getelementptr inbounds double* %c, i64 1
store double %mul5, double* %arrayidx5, align 8
ret void
}