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>
llvm-svn: 231270

1 files changed, 7 insertions, 7 deletions

diff --git a/llvm/test/Analysis/ScalarEvolution/max-trip-count.ll b/llvm/test/Analysis/ScalarEvolution/max-trip-count.ll
index abebea7d74c..dde44ba8257 100644
--- a/llvm/test/Analysis/ScalarEvolution/max-trip-count.ll
+++ b/llvm/test/Analysis/ScalarEvolution/max-trip-count.ll
@@ -2,7 +2,7 @@
 
 ; ScalarEvolution should be able to understand the loop and eliminate the casts.
 
-; CHECK: {%d,+,sizeof(i32)}
+; CHECK: {%d,+,4}
 
 define void @foo(i32* nocapture %d, i32 %n) nounwind {
 entry:
@@ -39,7 +39,7 @@ return:		; preds = %bb1.return_crit_edge, %entry
 ; count, it should say so.
 
 ; PR7845
-; CHECK: Loop %for.cond: <multiple exits> Unpredictable backedge-taken count. 
+; CHECK: Loop %for.cond: <multiple exits> Unpredictable backedge-taken count.
 ; CHECK: Loop %for.cond: max backedge-taken count is 5
 
 @.str = private constant [4 x i8] c"%d\0A\00"     ; <[4 x i8]*> [#uses=2]
@@ -101,7 +101,7 @@ for.end:                                          ; preds = %for.cond.for.end_cr
 
 ; PR19799: Indvars miscompile due to an incorrect max backedge taken count from SCEV.
 ; CHECK-LABEL: @pr19799
-; CHECK: Loop %for.body.i: <multiple exits> Unpredictable backedge-taken count. 
+; CHECK: Loop %for.body.i: <multiple exits> Unpredictable backedge-taken count.
 ; CHECK: Loop %for.body.i: max backedge-taken count is 1
 @a = common global i32 0, align 4
 
@@ -127,7 +127,7 @@ bar.exit:                                         ; preds = %for.cond.i, %for.bo
 
 ; PR18886: Indvars miscompile due to an incorrect max backedge taken count from SCEV.
 ; CHECK-LABEL: @pr18886
-; CHECK: Loop %for.body: <multiple exits> Unpredictable backedge-taken count. 
+; CHECK: Loop %for.body: <multiple exits> Unpredictable backedge-taken count.
 ; CHECK: Loop %for.body: max backedge-taken count is 3
 @aa = global i64 0, align 8
 
@@ -157,8 +157,8 @@ return:
 ; before the check is forever skipped.
 ;
 ; CHECK-LABEL: @cannot_compute_mustexit
-; CHECK: Loop %for.body.i: <multiple exits> Unpredictable backedge-taken count. 
-; CHECK: Loop %for.body.i: Unpredictable max backedge-taken count. 
+; CHECK: Loop %for.body.i: <multiple exits> Unpredictable backedge-taken count.
+; CHECK: Loop %for.body.i: Unpredictable max backedge-taken count.
 @b = common global i32 0, align 4
 
 define i32 @cannot_compute_mustexit() {
@@ -186,7 +186,7 @@ bar.exit:                                         ; preds = %for.cond.i, %for.bo
 ; MaxBECount should be the minimum of them.
 ;
 ; CHECK-LABEL: @two_mustexit
-; CHECK: Loop %for.body.i: <multiple exits> Unpredictable backedge-taken count. 
+; CHECK: Loop %for.body.i: <multiple exits> Unpredictable backedge-taken count.
 ; CHECK: Loop %for.body.i: max backedge-taken count is 1
 define i32 @two_mustexit() {
 entry: