Change these tests to use regular loads instead of llvm.x86.sse2.loadu.dq.

Enhance instcombine to use the preferred field of
GetOrEnforceKnownAlignment in more cases, so that regular IR operations are
optimized in the same way that the intrinsics currently are.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64623 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 20 insertions, 25 deletions

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 7117bda..76b5566 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -9275,7 +9275,7 @@ unsigned InstCombiner::GetOrEnforceKnownAlignment(Value *V,
 
 Instruction *InstCombiner::SimplifyMemTransfer(MemIntrinsic *MI) {
   unsigned DstAlign = GetOrEnforceKnownAlignment(MI->getOperand(1));
-  unsigned SrcAlign = GetOrEnforceKnownAlignment(MI->getOperand(2));
+  unsigned SrcAlign = GetOrEnforceKnownAlignment(MI->getOperand(2), DstAlign);
   unsigned MinAlign = std::min(DstAlign, SrcAlign);
   unsigned CopyAlign = MI->getAlignment()->getZExtValue();
 
@@ -11097,7 +11097,8 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) {
   Value *Op = LI.getOperand(0);
 
   // Attempt to improve the alignment.
-  unsigned KnownAlign = GetOrEnforceKnownAlignment(Op);
+  unsigned KnownAlign =
+    GetOrEnforceKnownAlignment(Op, TD->getPrefTypeAlignment(LI.getType()));
   if (KnownAlign >
       (LI.getAlignment() == 0 ? TD->getABITypeAlignment(LI.getType()) :
                                 LI.getAlignment()))
@@ -11376,7 +11377,8 @@ Instruction *InstCombiner::visitStoreInst(StoreInst &SI) {
   }
 
   // Attempt to improve the alignment.
-  unsigned KnownAlign = GetOrEnforceKnownAlignment(Ptr);
+  unsigned KnownAlign =
+    GetOrEnforceKnownAlignment(Ptr, TD->getPrefTypeAlignment(Val->getType()));
   if (KnownAlign >
       (SI.getAlignment() == 0 ? TD->getABITypeAlignment(Val->getType()) :
                                 SI.getAlignment()))
diff --git a/test/CodeGen/X86/2006-05-11-InstrSched.ll b/test/CodeGen/X86/2006-05-11-InstrSched.ll
index 774e724..6c0e76b 100644
--- a/test/CodeGen/X86/2006-05-11-InstrSched.ll
+++ b/test/CodeGen/X86/2006-05-11-InstrSched.ll
@@ -14,8 +14,8 @@ cond_true:		; preds = %cond_true, %entry
 	%k.0.0 = bitcast i32 %tmp.10 to i32		; <i32> [#uses=2]
 	%tmp31 = add i32 %k.0.0, -1		; <i32> [#uses=4]
 	%tmp32 = getelementptr i32* %mpp, i32 %tmp31		; <i32*> [#uses=1]
-	%tmp34 = bitcast i32* %tmp32 to i8*		; <i8*> [#uses=1]
-	%tmp = tail call <16 x i8> @llvm.x86.sse2.loadu.dq( i8* %tmp34 )		; <<16 x i8>> [#uses=1]
+	%tmp34 = bitcast i32* %tmp32 to <16 x i8>*		; <i8*> [#uses=1]
+	%tmp = load <16 x i8>* %tmp34, align 1
 	%tmp42 = getelementptr i32* %tpmm, i32 %tmp31		; <i32*> [#uses=1]
 	%tmp42.upgrd.1 = bitcast i32* %tmp42 to <4 x i32>*		; <<4 x i32>*> [#uses=1]
 	%tmp46 = load <4 x i32>* %tmp42.upgrd.1		; <<4 x i32>> [#uses=1]
@@ -23,8 +23,8 @@ cond_true:		; preds = %cond_true, %entry
 	%tmp55 = add <4 x i32> %tmp54, %tmp46		; <<4 x i32>> [#uses=2]
 	%tmp55.upgrd.2 = bitcast <4 x i32> %tmp55 to <2 x i64>		; <<2 x i64>> [#uses=1]
 	%tmp62 = getelementptr i32* %ip, i32 %tmp31		; <i32*> [#uses=1]
-	%tmp65 = bitcast i32* %tmp62 to i8*		; <i8*> [#uses=1]
-	%tmp66 = tail call <16 x i8> @llvm.x86.sse2.loadu.dq( i8* %tmp65 )		; <<16 x i8>> [#uses=1]
+	%tmp65 = bitcast i32* %tmp62 to <16 x i8>*		; <i8*> [#uses=1]
+	%tmp66 = load <16 x i8>* %tmp65, align 1
 	%tmp73 = getelementptr i32* %tpim, i32 %tmp31		; <i32*> [#uses=1]
 	%tmp73.upgrd.3 = bitcast i32* %tmp73 to <4 x i32>*		; <<4 x i32>*> [#uses=1]
 	%tmp77 = load <4 x i32>* %tmp73.upgrd.3		; <<4 x i32>> [#uses=1]
@@ -50,6 +50,4 @@ return:		; preds = %cond_true, %entry
 	ret void
 }
 
-declare <16 x i8> @llvm.x86.sse2.loadu.dq(i8*)
-
 declare <4 x i32> @llvm.x86.sse2.pcmpgt.d(<4 x i32>, <4 x i32>)
diff --git a/test/CodeGen/X86/iv-users-in-other-loops.ll b/test/CodeGen/X86/iv-users-in-other-loops.ll
index 175f4c0..e8762bc 100644
--- a/test/CodeGen/X86/iv-users-in-other-loops.ll
+++ b/test/CodeGen/X86/iv-users-in-other-loops.ll
@@ -160,23 +160,23 @@ bb9:		; preds = %bb9, %bb10.preheader
 	%B_addr.0.sum = add i64 %B_addr.0.rec, %A_addr.440.rec		; <i64> [#uses=2]
 	%B_addr.438 = getelementptr float* %B, i64 %B_addr.0.sum		; <float*> [#uses=1]
 	%A_addr.440 = getelementptr float* %A, i64 %B_addr.0.sum		; <float*> [#uses=1]
-	%61 = bitcast float* %B_addr.438 to i8*		; <i8*> [#uses=1]
-	%62 = tail call <4 x float> @llvm.x86.sse.loadu.ps(i8* %61) nounwind readonly		; <<4 x float>> [#uses=1]
+	%61 = bitcast float* %B_addr.438 to <4 x float>*		; <i8*> [#uses=1]
+	%62 = load <4 x float>* %61, align 1
 	%B_addr.438.sum169 = or i64 %A_addr.440.rec, 4		; <i64> [#uses=1]
 	%B_addr.0.sum187 = add i64 %B_addr.0.rec, %B_addr.438.sum169		; <i64> [#uses=2]
 	%63 = getelementptr float* %B, i64 %B_addr.0.sum187		; <float*> [#uses=1]
-	%64 = bitcast float* %63 to i8*		; <i8*> [#uses=1]
-	%65 = tail call <4 x float> @llvm.x86.sse.loadu.ps(i8* %64) nounwind readonly		; <<4 x float>> [#uses=1]
+	%64 = bitcast float* %63 to <4 x float>*		; <i8*> [#uses=1]
+	%65 = load <4 x float>* %64, align 1
 	%B_addr.438.sum168 = or i64 %A_addr.440.rec, 8		; <i64> [#uses=1]
 	%B_addr.0.sum186 = add i64 %B_addr.0.rec, %B_addr.438.sum168		; <i64> [#uses=2]
 	%66 = getelementptr float* %B, i64 %B_addr.0.sum186		; <float*> [#uses=1]
-	%67 = bitcast float* %66 to i8*		; <i8*> [#uses=1]
-	%68 = tail call <4 x float> @llvm.x86.sse.loadu.ps(i8* %67) nounwind readonly		; <<4 x float>> [#uses=1]
+	%67 = bitcast float* %66 to <4 x float>*		; <i8*> [#uses=1]
+	%68 = load <4 x float>* %67, align 1
 	%B_addr.438.sum167 = or i64 %A_addr.440.rec, 12		; <i64> [#uses=1]
 	%B_addr.0.sum185 = add i64 %B_addr.0.rec, %B_addr.438.sum167		; <i64> [#uses=2]
 	%69 = getelementptr float* %B, i64 %B_addr.0.sum185		; <float*> [#uses=1]
-	%70 = bitcast float* %69 to i8*		; <i8*> [#uses=1]
-	%71 = tail call <4 x float> @llvm.x86.sse.loadu.ps(i8* %70) nounwind readonly		; <<4 x float>> [#uses=1]
+	%70 = bitcast float* %69 to <4 x float>*		; <i8*> [#uses=1]
+	%71 = load <4 x float>* %70, align 1
 	%72 = bitcast float* %A_addr.440 to <4 x float>*		; <<4 x float>*> [#uses=1]
 	%73 = load <4 x float>* %72, align 16		; <<4 x float>> [#uses=1]
 	%74 = mul <4 x float> %73, %62		; <<4 x float>> [#uses=1]
@@ -214,8 +214,8 @@ bb11:		; preds = %bb11, %bb12.loopexit
 	%A_addr.529.rec = shl i64 %indvar, 2		; <i64> [#uses=3]
 	%B_addr.527 = getelementptr float* %B_addr.4.lcssa, i64 %A_addr.529.rec		; <float*> [#uses=1]
 	%A_addr.529 = getelementptr float* %A_addr.4.lcssa, i64 %A_addr.529.rec		; <float*> [#uses=1]
-	%95 = bitcast float* %B_addr.527 to i8*		; <i8*> [#uses=1]
-	%96 = tail call <4 x float> @llvm.x86.sse.loadu.ps(i8* %95) nounwind readonly		; <<4 x float>> [#uses=1]
+	%95 = bitcast float* %B_addr.527 to <4 x float>*		; <i8*> [#uses=1]
+	%96 = load <4 x float>* %95, align 1
 	%97 = bitcast float* %A_addr.529 to <4 x float>*		; <<4 x float>*> [#uses=1]
 	%98 = load <4 x float>* %97, align 16		; <<4 x float>> [#uses=1]
 	%99 = mul <4 x float> %98, %96		; <<4 x float>> [#uses=1]
@@ -288,5 +288,3 @@ bb16:		; preds = %bb14, %bb13
 	store float %Sum0.2.lcssa, float* %C, align 4
 	ret void
 }
-
-declare <4 x float> @llvm.x86.sse.loadu.ps(i8*) nounwind readonly
diff --git a/test/Transforms/InstCombine/align-inc.ll b/test/Transforms/InstCombine/align-inc.ll
index 0ad01cb..104d991 100644
--- a/test/Transforms/InstCombine/align-inc.ll
+++ b/test/Transforms/InstCombine/align-inc.ll
@@ -3,12 +3,9 @@
 
 @GLOBAL = internal global [4 x i32] zeroinitializer
 
-declare <16 x i8> @llvm.x86.sse2.loadu.dq(i8*)
-
-
 define <16 x i8> @foo(<2 x i64> %x) {
 entry:
-	%tmp = tail call <16 x i8> @llvm.x86.sse2.loadu.dq( i8* bitcast ([4 x i32]* @GLOBAL to i8*) )
+	%tmp = load <16 x i8>* bitcast ([4 x i32]* @GLOBAL to <16 x i8>*), align 1
 	ret <16 x i8> %tmp
 }