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ScopDetect: Allow multiplications of the form <param> * <param> 

We handle these by treating this result of the multiplication as an additional
parameter.

llvm-svn: 179163
This commit is contained in:
Tobias Grosser 2013-04-10 07:42:28 +00:00
parent af822018aa
commit ecb5092707
2 changed files with 34 additions and 0 deletions
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5
polly/lib/Support/SCEVValidator.cpp
View File

@ -208,6 +208,11 @@ public:
if (Op.isINT())
continue;
if (Op.isPARAM() && Return.isPARAM()) {
Return.merge(Op);
continue;
}
if ((Op.isIV() || Op.isPARAM()) && !Return.isINT()) {
DEBUG(dbgs() << "INVALID: More than one non-int operand in MulExpr\n"
<< "\tExpr: " << *Expr << "\n"

29
polly/test/ScopDetect/parametric-multiply-in-scev.ll Normal file
View File

@ -0,0 +1,29 @@
; RUN: opt %loadPolly -polly-detect -analyze < %s | FileCheck %s
; RUN: opt %loadPolly -polly-detect -polly-codegen-scev -analyze < %s | FileCheck %s
; foo(float *A, long n, long k) {
; if (true)
; A[n * k] = 0;
; }
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-unknown-linux-gnu"
define void @foo(float* %A, i64 %n, i64 %k) {
entry:
br label %for.j
for.j:
br i1 true, label %if.then, label %return
if.then:
%mul = mul nsw i64 %n, %k
%arrayidx = getelementptr float* %A, i64 %mul
store float 0.000000e+00, float* %arrayidx
br label %return
return:
ret void
}
; CHECK: Valid Region for Scop: for.j => return