llvm/test/Transforms/LoopStrengthReduce/variable_stride.ll
Mehdi Amini c94da20917 Make DataLayout Non-Optional in the Module
Summary:
DataLayout keeps the string used for its creation.

As a side effect it is no longer needed in the Module.
This is "almost" NFC, the string is no longer
canonicalized, you can't rely on two "equals" DataLayout
having the same string returned by getStringRepresentation().

Get rid of DataLayoutPass: the DataLayout is in the Module

The DataLayout is "per-module", let's enforce this by not
duplicating it more than necessary.
One more step toward non-optionality of the DataLayout in the
module.

Make DataLayout Non-Optional in the Module

Module->getDataLayout() will never returns nullptr anymore.

Reviewers: echristo

Subscribers: resistor, llvm-commits, jholewinski

Differential Revision: http://reviews.llvm.org/D7992

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231270 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-04 18:43:29 +00:00

22 lines
614 B
LLVM

; Check that variable strides are reduced to adds instead of multiplies.
; RUN: opt < %s -loop-reduce -S | not grep mul
; Provide legal integer types.
target datalayout = "n8:16:32:64"
declare i1 @pred(i32)
define void @test([10000 x i32]* %P, i32 %STRIDE) {
; <label>:0
br label %Loop
Loop: ; preds = %Loop, %0
%INDVAR = phi i32 [ 0, %0 ], [ %INDVAR2, %Loop ] ; <i32> [#uses=2]
%Idx = mul i32 %INDVAR, %STRIDE ; <i32> [#uses=1]
%cond = call i1 @pred( i32 %Idx ) ; <i1> [#uses=1]
%INDVAR2 = add i32 %INDVAR, 1 ; <i32> [#uses=1]
br i1 %cond, label %Loop, label %Out
Out: ; preds = %Loop
ret void
}