X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=test%2FCodeGen%2FAArch64%2Fldst-opt.ll;h=b2c11c7517c0bab0af0d5463b304b743109eea45;hb=cd2647f4fdc4a34eac8e26ea89a1f7c5abf9177a;hp=a0de6342cb800de1eb1a719f3c4ec9ee63c112de;hpb=d0dbe02fd26d47ed32c9e04a2a0385b26a49f4ed;p=oota-llvm.git

diff --git a/test/CodeGen/AArch64/ldst-opt.ll b/test/CodeGen/AArch64/ldst-opt.ll
index a0de6342cb8..b2c11c7517c 100644
--- a/test/CodeGen/AArch64/ldst-opt.ll
+++ b/test/CodeGen/AArch64/ldst-opt.ll
@@ -30,11 +30,11 @@ define void @load-pre-indexed-word(%struct.word* %ptr) nounwind {
 ; CHECK-LABEL: load-pre-indexed-word
 ; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.word* %ptr, i64 0, i32 1, i32 0
-  %add = load i32* %a, align 4
+  %a = getelementptr inbounds %struct.word, %struct.word* %ptr, i64 0, i32 1, i32 0
+  %add = load i32, i32* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.word* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.word, %struct.word* %ptr, i64 0, i32 1
   tail call void @bar_word(%s.word* %c, i32 %add)
   ret void
 }
@@ -43,11 +43,11 @@ define void @store-pre-indexed-word(%struct.word* %ptr, i32 %val) nounwind {
 ; CHECK-LABEL: store-pre-indexed-word
 ; CHECK: str w{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.word* %ptr, i64 0, i32 1, i32 0
+  %a = getelementptr inbounds %struct.word, %struct.word* %ptr, i64 0, i32 1, i32 0
   store i32 %val, i32* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.word* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.word, %struct.word* %ptr, i64 0, i32 1
   tail call void @bar_word(%s.word* %c, i32 %val)
   ret void
 }
@@ -58,11 +58,11 @@ define void @load-pre-indexed-doubleword(%struct.doubleword* %ptr) nounwind {
 ; CHECK-LABEL: load-pre-indexed-doubleword
 ; CHECK: ldr x{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.doubleword* %ptr, i64 0, i32 1, i32 0
-  %add = load i64* %a, align 4
+  %a = getelementptr inbounds %struct.doubleword, %struct.doubleword* %ptr, i64 0, i32 1, i32 0
+  %add = load i64, i64* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.doubleword* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.doubleword, %struct.doubleword* %ptr, i64 0, i32 1
   tail call void @bar_doubleword(%s.doubleword* %c, i64 %add)
   ret void
 }
@@ -71,11 +71,11 @@ define void @store-pre-indexed-doubleword(%struct.doubleword* %ptr, i64 %val) no
 ; CHECK-LABEL: store-pre-indexed-doubleword
 ; CHECK: str x{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.doubleword* %ptr, i64 0, i32 1, i32 0
+  %a = getelementptr inbounds %struct.doubleword, %struct.doubleword* %ptr, i64 0, i32 1, i32 0
   store i64 %val, i64* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.doubleword* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.doubleword, %struct.doubleword* %ptr, i64 0, i32 1
   tail call void @bar_doubleword(%s.doubleword* %c, i64 %val)
   ret void
 }
@@ -86,11 +86,11 @@ define void @load-pre-indexed-quadword(%struct.quadword* %ptr) nounwind {
 ; CHECK-LABEL: load-pre-indexed-quadword
 ; CHECK: ldr q{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.quadword* %ptr, i64 0, i32 1, i32 0
-  %add = load fp128* %a, align 4
+  %a = getelementptr inbounds %struct.quadword, %struct.quadword* %ptr, i64 0, i32 1, i32 0
+  %add = load fp128, fp128* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.quadword* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.quadword, %struct.quadword* %ptr, i64 0, i32 1
   tail call void @bar_quadword(%s.quadword* %c, fp128 %add)
   ret void
 }
@@ -99,11 +99,11 @@ define void @store-pre-indexed-quadword(%struct.quadword* %ptr, fp128 %val) noun
 ; CHECK-LABEL: store-pre-indexed-quadword
 ; CHECK: str q{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.quadword* %ptr, i64 0, i32 1, i32 0
+  %a = getelementptr inbounds %struct.quadword, %struct.quadword* %ptr, i64 0, i32 1, i32 0
   store fp128 %val, fp128* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.quadword* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.quadword, %struct.quadword* %ptr, i64 0, i32 1
   tail call void @bar_quadword(%s.quadword* %c, fp128 %val)
   ret void
 }
@@ -114,11 +114,11 @@ define void @load-pre-indexed-float(%struct.float* %ptr) nounwind {
 ; CHECK-LABEL: load-pre-indexed-float
 ; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.float* %ptr, i64 0, i32 1, i32 0
-  %add = load float* %a, align 4
+  %a = getelementptr inbounds %struct.float, %struct.float* %ptr, i64 0, i32 1, i32 0
+  %add = load float, float* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.float* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.float, %struct.float* %ptr, i64 0, i32 1
   tail call void @bar_float(%s.float* %c, float %add)
   ret void
 }
@@ -127,11 +127,11 @@ define void @store-pre-indexed-float(%struct.float* %ptr, float %val) nounwind {
 ; CHECK-LABEL: store-pre-indexed-float
 ; CHECK: str s{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.float* %ptr, i64 0, i32 1, i32 0
+  %a = getelementptr inbounds %struct.float, %struct.float* %ptr, i64 0, i32 1, i32 0
   store float %val, float* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.float* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.float, %struct.float* %ptr, i64 0, i32 1
   tail call void @bar_float(%s.float* %c, float %val)
   ret void
 }
@@ -142,11 +142,11 @@ define void @load-pre-indexed-double(%struct.double* %ptr) nounwind {
 ; CHECK-LABEL: load-pre-indexed-double
 ; CHECK: ldr d{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.double* %ptr, i64 0, i32 1, i32 0
-  %add = load double* %a, align 4
+  %a = getelementptr inbounds %struct.double, %struct.double* %ptr, i64 0, i32 1, i32 0
+  %add = load double, double* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.double* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.double, %struct.double* %ptr, i64 0, i32 1
   tail call void @bar_double(%s.double* %c, double %add)
   ret void
 }
@@ -155,15 +155,226 @@ define void @store-pre-indexed-double(%struct.double* %ptr, double %val) nounwin
 ; CHECK-LABEL: store-pre-indexed-double
 ; CHECK: str d{{[0-9]+}}, [x{{[0-9]+}}, #32]!
 entry:
-  %a = getelementptr inbounds %struct.double* %ptr, i64 0, i32 1, i32 0
+  %a = getelementptr inbounds %struct.double, %struct.double* %ptr, i64 0, i32 1, i32 0
   store double %val, double* %a, align 4
   br label %bar
 bar:
-  %c = getelementptr inbounds %struct.double* %ptr, i64 0, i32 1
+  %c = getelementptr inbounds %struct.double, %struct.double* %ptr, i64 0, i32 1
   tail call void @bar_double(%s.double* %c, double %val)
   ret void
 }
 
+; Check the following transform:
+;
+; add x8, x8, #16
+;  ...
+; ldr X, [x8]
+;  ->
+; ldr X, [x8, #16]!
+;
+; with X being either w0, x0, s0, d0 or q0.
+
+%pre.struct.i32 = type { i32, i32, i32}
+%pre.struct.i64 = type { i32, i64, i64}
+%pre.struct.i128 = type { i32, <2 x i64>, <2 x i64>}
+%pre.struct.float = type { i32, float, float}
+%pre.struct.double = type { i32, double, double}
+
+define i32 @load-pre-indexed-word2(%pre.struct.i32** %this, i1 %cond,
+                                   %pre.struct.i32* %load2) nounwind {
+; CHECK-LABEL: load-pre-indexed-word2
+; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}, #4]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.i32*, %pre.struct.i32** %this
+  %gep1 = getelementptr inbounds %pre.struct.i32, %pre.struct.i32* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.i32, %pre.struct.i32* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi i32* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  %ret = load i32, i32* %retptr
+  ret i32 %ret
+}
+
+define i64 @load-pre-indexed-doubleword2(%pre.struct.i64** %this, i1 %cond,
+                                         %pre.struct.i64* %load2) nounwind {
+; CHECK-LABEL: load-pre-indexed-doubleword2
+; CHECK: ldr x{{[0-9]+}}, [x{{[0-9]+}}, #8]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.i64*, %pre.struct.i64** %this
+  %gep1 = getelementptr inbounds %pre.struct.i64, %pre.struct.i64* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.i64, %pre.struct.i64* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi i64* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  %ret = load i64, i64* %retptr
+  ret i64 %ret
+}
+
+define <2 x i64> @load-pre-indexed-quadword2(%pre.struct.i128** %this, i1 %cond,
+                                             %pre.struct.i128* %load2) nounwind {
+; CHECK-LABEL: load-pre-indexed-quadword2
+; CHECK: ldr q{{[0-9]+}}, [x{{[0-9]+}}, #16]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.i128*, %pre.struct.i128** %this
+  %gep1 = getelementptr inbounds %pre.struct.i128, %pre.struct.i128* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.i128, %pre.struct.i128* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi <2 x i64>* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  %ret = load <2 x i64>, <2 x i64>* %retptr
+  ret <2 x i64> %ret
+}
+
+define float @load-pre-indexed-float2(%pre.struct.float** %this, i1 %cond,
+                                      %pre.struct.float* %load2) nounwind {
+; CHECK-LABEL: load-pre-indexed-float2
+; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+}}, #4]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.float*, %pre.struct.float** %this
+  %gep1 = getelementptr inbounds %pre.struct.float, %pre.struct.float* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.float, %pre.struct.float* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi float* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  %ret = load float, float* %retptr
+  ret float %ret
+}
+
+define double @load-pre-indexed-double2(%pre.struct.double** %this, i1 %cond,
+                                        %pre.struct.double* %load2) nounwind {
+; CHECK-LABEL: load-pre-indexed-double2
+; CHECK: ldr d{{[0-9]+}}, [x{{[0-9]+}}, #8]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.double*, %pre.struct.double** %this
+  %gep1 = getelementptr inbounds %pre.struct.double, %pre.struct.double* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.double, %pre.struct.double* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi double* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  %ret = load double, double* %retptr
+  ret double %ret
+}
+
+; Check the following transform:
+;
+; add x8, x8, #16
+;  ...
+; str X, [x8]
+;  ->
+; str X, [x8, #16]!
+;
+; with X being either w0, x0, s0, d0 or q0.
+
+define void @store-pre-indexed-word2(%pre.struct.i32** %this, i1 %cond,
+                                     %pre.struct.i32* %load2,
+                                     i32 %val) nounwind {
+; CHECK-LABEL: store-pre-indexed-word2
+; CHECK: str w{{[0-9]+}}, [x{{[0-9]+}}, #4]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.i32*, %pre.struct.i32** %this
+  %gep1 = getelementptr inbounds %pre.struct.i32, %pre.struct.i32* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.i32, %pre.struct.i32* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi i32* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  store i32 %val, i32* %retptr
+  ret void
+}
+
+define void @store-pre-indexed-doubleword2(%pre.struct.i64** %this, i1 %cond,
+                                           %pre.struct.i64* %load2,
+                                           i64 %val) nounwind {
+; CHECK-LABEL: store-pre-indexed-doubleword2
+; CHECK: str x{{[0-9]+}}, [x{{[0-9]+}}, #8]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.i64*, %pre.struct.i64** %this
+  %gep1 = getelementptr inbounds %pre.struct.i64, %pre.struct.i64* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.i64, %pre.struct.i64* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi i64* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  store i64 %val, i64* %retptr
+  ret void
+}
+
+define void @store-pre-indexed-quadword2(%pre.struct.i128** %this, i1 %cond,
+                                         %pre.struct.i128* %load2,
+                                         <2 x i64> %val) nounwind {
+; CHECK-LABEL: store-pre-indexed-quadword2
+; CHECK: str q{{[0-9]+}}, [x{{[0-9]+}}, #16]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.i128*, %pre.struct.i128** %this
+  %gep1 = getelementptr inbounds %pre.struct.i128, %pre.struct.i128* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.i128, %pre.struct.i128* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi <2 x i64>* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  store <2 x i64> %val, <2 x i64>* %retptr
+  ret void
+}
+
+define void @store-pre-indexed-float2(%pre.struct.float** %this, i1 %cond,
+                                      %pre.struct.float* %load2,
+                                      float %val) nounwind {
+; CHECK-LABEL: store-pre-indexed-float2
+; CHECK: str s{{[0-9]+}}, [x{{[0-9]+}}, #4]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.float*, %pre.struct.float** %this
+  %gep1 = getelementptr inbounds %pre.struct.float, %pre.struct.float* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.float, %pre.struct.float* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi float* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  store float %val, float* %retptr
+  ret void
+}
+
+define void @store-pre-indexed-double2(%pre.struct.double** %this, i1 %cond,
+                                      %pre.struct.double* %load2,
+                                      double %val) nounwind {
+; CHECK-LABEL: store-pre-indexed-double2
+; CHECK: str d{{[0-9]+}}, [x{{[0-9]+}}, #8]!
+  br i1 %cond, label %if.then, label %if.end
+if.then:
+  %load1 = load %pre.struct.double*, %pre.struct.double** %this
+  %gep1 = getelementptr inbounds %pre.struct.double, %pre.struct.double* %load1, i64 0, i32 1
+  br label %return
+if.end:
+  %gep2 = getelementptr inbounds %pre.struct.double, %pre.struct.double* %load2, i64 0, i32 2
+  br label %return
+return:
+  %retptr = phi double* [ %gep1, %if.then ], [ %gep2, %if.end ]
+  store double %val, double* %retptr
+  ret void
+}
+
 ; Check the following transform:
 ;
 ; ldr X, [x20]
@@ -178,19 +389,19 @@ define void @load-post-indexed-word(i32* %array, i64 %count) nounwind {
 ; CHECK-LABEL: load-post-indexed-word
 ; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}], #16
 entry:
-  %gep1 = getelementptr i32* %array, i64 2
+  %gep1 = getelementptr i32, i32* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi i32* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr i32* %iv2, i64 -1
-  %load = load i32* %gep2
+  %gep2 = getelementptr i32, i32* %iv2, i64 -1
+  %load = load i32, i32* %gep2
   call void @use-word(i32 %load)
-  %load2 = load i32* %iv2
+  %load2 = load i32, i32* %iv2
   call void @use-word(i32 %load2)
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr i32* %iv2, i64 4
+  %gep3 = getelementptr i32, i32* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -202,19 +413,19 @@ define void @load-post-indexed-doubleword(i64* %array, i64 %count) nounwind {
 ; CHECK-LABEL: load-post-indexed-doubleword
 ; CHECK: ldr x{{[0-9]+}}, [x{{[0-9]+}}], #32
 entry:
-  %gep1 = getelementptr i64* %array, i64 2
+  %gep1 = getelementptr i64, i64* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi i64* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr i64* %iv2, i64 -1
-  %load = load i64* %gep2
+  %gep2 = getelementptr i64, i64* %iv2, i64 -1
+  %load = load i64, i64* %gep2
   call void @use-doubleword(i64 %load)
-  %load2 = load i64* %iv2
+  %load2 = load i64, i64* %iv2
   call void @use-doubleword(i64 %load2)
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr i64* %iv2, i64 4
+  %gep3 = getelementptr i64, i64* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -226,19 +437,19 @@ define void @load-post-indexed-quadword(<2 x i64>* %array, i64 %count) nounwind
 ; CHECK-LABEL: load-post-indexed-quadword
 ; CHECK: ldr q{{[0-9]+}}, [x{{[0-9]+}}], #64
 entry:
-  %gep1 = getelementptr <2 x i64>* %array, i64 2
+  %gep1 = getelementptr <2 x i64>, <2 x i64>* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi <2 x i64>* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr <2 x i64>* %iv2, i64 -1
-  %load = load <2 x i64>* %gep2
+  %gep2 = getelementptr <2 x i64>, <2 x i64>* %iv2, i64 -1
+  %load = load <2 x i64>, <2 x i64>* %gep2
   call void @use-quadword(<2 x i64> %load)
-  %load2 = load <2 x i64>* %iv2
+  %load2 = load <2 x i64>, <2 x i64>* %iv2
   call void @use-quadword(<2 x i64> %load2)
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr <2 x i64>* %iv2, i64 4
+  %gep3 = getelementptr <2 x i64>, <2 x i64>* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -250,19 +461,19 @@ define void @load-post-indexed-float(float* %array, i64 %count) nounwind {
 ; CHECK-LABEL: load-post-indexed-float
 ; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+}}], #16
 entry:
-  %gep1 = getelementptr float* %array, i64 2
+  %gep1 = getelementptr float, float* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi float* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr float* %iv2, i64 -1
-  %load = load float* %gep2
+  %gep2 = getelementptr float, float* %iv2, i64 -1
+  %load = load float, float* %gep2
   call void @use-float(float %load)
-  %load2 = load float* %iv2
+  %load2 = load float, float* %iv2
   call void @use-float(float %load2)
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr float* %iv2, i64 4
+  %gep3 = getelementptr float, float* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -274,19 +485,19 @@ define void @load-post-indexed-double(double* %array, i64 %count) nounwind {
 ; CHECK-LABEL: load-post-indexed-double
 ; CHECK: ldr d{{[0-9]+}}, [x{{[0-9]+}}], #32
 entry:
-  %gep1 = getelementptr double* %array, i64 2
+  %gep1 = getelementptr double, double* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi double* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr double* %iv2, i64 -1
-  %load = load double* %gep2
+  %gep2 = getelementptr double, double* %iv2, i64 -1
+  %load = load double, double* %gep2
   call void @use-double(double %load)
-  %load2 = load double* %iv2
+  %load2 = load double, double* %iv2
   call void @use-double(double %load2)
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr double* %iv2, i64 4
+  %gep3 = getelementptr double, double* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -308,18 +519,18 @@ define void @store-post-indexed-word(i32* %array, i64 %count, i32 %val) nounwind
 ; CHECK-LABEL: store-post-indexed-word
 ; CHECK: str w{{[0-9]+}}, [x{{[0-9]+}}], #16
 entry:
-  %gep1 = getelementptr i32* %array, i64 2
+  %gep1 = getelementptr i32, i32* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi i32* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr i32* %iv2, i64 -1
-  %load = load i32* %gep2
+  %gep2 = getelementptr i32, i32* %iv2, i64 -1
+  %load = load i32, i32* %gep2
   call void @use-word(i32 %load)
   store i32 %val, i32* %iv2
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr i32* %iv2, i64 4
+  %gep3 = getelementptr i32, i32* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -331,18 +542,18 @@ define void @store-post-indexed-doubleword(i64* %array, i64 %count, i64 %val) no
 ; CHECK-LABEL: store-post-indexed-doubleword
 ; CHECK: str x{{[0-9]+}}, [x{{[0-9]+}}], #32
 entry:
-  %gep1 = getelementptr i64* %array, i64 2
+  %gep1 = getelementptr i64, i64* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi i64* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr i64* %iv2, i64 -1
-  %load = load i64* %gep2
+  %gep2 = getelementptr i64, i64* %iv2, i64 -1
+  %load = load i64, i64* %gep2
   call void @use-doubleword(i64 %load)
   store i64 %val, i64* %iv2
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr i64* %iv2, i64 4
+  %gep3 = getelementptr i64, i64* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -354,18 +565,18 @@ define void @store-post-indexed-quadword(<2 x i64>* %array, i64 %count, <2 x i64
 ; CHECK-LABEL: store-post-indexed-quadword
 ; CHECK: str q{{[0-9]+}}, [x{{[0-9]+}}], #64
 entry:
-  %gep1 = getelementptr <2 x i64>* %array, i64 2
+  %gep1 = getelementptr <2 x i64>, <2 x i64>* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi <2 x i64>* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr <2 x i64>* %iv2, i64 -1
-  %load = load <2 x i64>* %gep2
+  %gep2 = getelementptr <2 x i64>, <2 x i64>* %iv2, i64 -1
+  %load = load <2 x i64>, <2 x i64>* %gep2
   call void @use-quadword(<2 x i64> %load)
   store <2 x i64> %val, <2 x i64>* %iv2
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr <2 x i64>* %iv2, i64 4
+  %gep3 = getelementptr <2 x i64>, <2 x i64>* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -377,18 +588,18 @@ define void @store-post-indexed-float(float* %array, i64 %count, float %val) nou
 ; CHECK-LABEL: store-post-indexed-float
 ; CHECK: str s{{[0-9]+}}, [x{{[0-9]+}}], #16
 entry:
-  %gep1 = getelementptr float* %array, i64 2
+  %gep1 = getelementptr float, float* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi float* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr float* %iv2, i64 -1
-  %load = load float* %gep2
+  %gep2 = getelementptr float, float* %iv2, i64 -1
+  %load = load float, float* %gep2
   call void @use-float(float %load)
   store float %val, float* %iv2
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr float* %iv2, i64 4
+  %gep3 = getelementptr float, float* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -400,18 +611,18 @@ define void @store-post-indexed-double(double* %array, i64 %count, double %val)
 ; CHECK-LABEL: store-post-indexed-double
 ; CHECK: str d{{[0-9]+}}, [x{{[0-9]+}}], #32
 entry:
-  %gep1 = getelementptr double* %array, i64 2
+  %gep1 = getelementptr double, double* %array, i64 2
   br label %body
 
 body:
   %iv2 = phi double* [ %gep3, %body ], [ %gep1, %entry ]
   %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ]
-  %gep2 = getelementptr double* %iv2, i64 -1
-  %load = load double* %gep2
+  %gep2 = getelementptr double, double* %iv2, i64 -1
+  %load = load double, double* %gep2
   call void @use-double(double %load)
   store double %val, double* %iv2
   %iv.next = add i64 %iv, -4
-  %gep3 = getelementptr double* %iv2, i64 4
+  %gep3 = getelementptr double, double* %iv2, i64 4
   %cond = icmp eq i64 %iv.next, 0
   br i1 %cond, label %exit, label %body
 
@@ -424,3 +635,133 @@ declare void @use-doubleword(i64)
 declare void @use-quadword(<2 x i64>)
 declare void @use-float(float)
 declare void @use-double(double)
+
+; Check the following transform:
+;
+; (ldr|str) X, [x20]
+;  ...
+; sub x20, x20, #16
+;  ->
+; (ldr|str) X, [x20], #-16
+;
+; with X being either w0, x0, s0, d0 or q0.
+
+define void @post-indexed-sub-word(i32* %a, i32* %b, i64 %count) nounwind {
+; CHECK-LABEL: post-indexed-sub-word
+; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}], #-8
+; CHECK: str w{{[0-9]+}}, [x{{[0-9]+}}], #-8
+  br label %for.body
+for.body:
+  %phi1 = phi i32* [ %gep4, %for.body ], [ %b, %0 ]
+  %phi2 = phi i32* [ %gep3, %for.body ], [ %a, %0 ]
+  %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ]
+  %gep1 = getelementptr i32, i32* %phi1, i64 -1
+  %load1 = load i32, i32* %gep1
+  %gep2 = getelementptr i32, i32* %phi2, i64 -1
+  store i32 %load1, i32* %gep2
+  %load2 = load i32, i32* %phi1
+  store i32 %load2, i32* %phi2
+  %dec.i = add nsw i64 %i, -1
+  %gep3 = getelementptr i32, i32* %phi2, i64 -2
+  %gep4 = getelementptr i32, i32* %phi1, i64 -2
+  %cond = icmp sgt i64 %dec.i, 0
+  br i1 %cond, label %for.body, label %end
+end:
+  ret void
+}
+
+define void @post-indexed-sub-doubleword(i64* %a, i64* %b, i64 %count) nounwind {
+; CHECK-LABEL: post-indexed-sub-doubleword
+; CHECK: ldr x{{[0-9]+}}, [x{{[0-9]+}}], #-16
+; CHECK: str x{{[0-9]+}}, [x{{[0-9]+}}], #-16
+  br label %for.body
+for.body:
+  %phi1 = phi i64* [ %gep4, %for.body ], [ %b, %0 ]
+  %phi2 = phi i64* [ %gep3, %for.body ], [ %a, %0 ]
+  %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ]
+  %gep1 = getelementptr i64, i64* %phi1, i64 -1
+  %load1 = load i64, i64* %gep1
+  %gep2 = getelementptr i64, i64* %phi2, i64 -1
+  store i64 %load1, i64* %gep2
+  %load2 = load i64, i64* %phi1
+  store i64 %load2, i64* %phi2
+  %dec.i = add nsw i64 %i, -1
+  %gep3 = getelementptr i64, i64* %phi2, i64 -2
+  %gep4 = getelementptr i64, i64* %phi1, i64 -2
+  %cond = icmp sgt i64 %dec.i, 0
+  br i1 %cond, label %for.body, label %end
+end:
+  ret void
+}
+
+define void @post-indexed-sub-quadword(<2 x i64>* %a, <2 x i64>* %b, i64 %count) nounwind {
+; CHECK-LABEL: post-indexed-sub-quadword
+; CHECK: ldr q{{[0-9]+}}, [x{{[0-9]+}}], #-32
+; CHECK: str q{{[0-9]+}}, [x{{[0-9]+}}], #-32
+  br label %for.body
+for.body:
+  %phi1 = phi <2 x i64>* [ %gep4, %for.body ], [ %b, %0 ]
+  %phi2 = phi <2 x i64>* [ %gep3, %for.body ], [ %a, %0 ]
+  %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ]
+  %gep1 = getelementptr <2 x i64>, <2 x i64>* %phi1, i64 -1
+  %load1 = load <2 x i64>, <2 x i64>* %gep1
+  %gep2 = getelementptr <2 x i64>, <2 x i64>* %phi2, i64 -1
+  store <2 x i64> %load1, <2 x i64>* %gep2
+  %load2 = load <2 x i64>, <2 x i64>* %phi1
+  store <2 x i64> %load2, <2 x i64>* %phi2
+  %dec.i = add nsw i64 %i, -1
+  %gep3 = getelementptr <2 x i64>, <2 x i64>* %phi2, i64 -2
+  %gep4 = getelementptr <2 x i64>, <2 x i64>* %phi1, i64 -2
+  %cond = icmp sgt i64 %dec.i, 0
+  br i1 %cond, label %for.body, label %end
+end:
+  ret void
+}
+
+define void @post-indexed-sub-float(float* %a, float* %b, i64 %count) nounwind {
+; CHECK-LABEL: post-indexed-sub-float
+; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+}}], #-8
+; CHECK: str s{{[0-9]+}}, [x{{[0-9]+}}], #-8
+  br label %for.body
+for.body:
+  %phi1 = phi float* [ %gep4, %for.body ], [ %b, %0 ]
+  %phi2 = phi float* [ %gep3, %for.body ], [ %a, %0 ]
+  %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ]
+  %gep1 = getelementptr float, float* %phi1, i64 -1
+  %load1 = load float, float* %gep1
+  %gep2 = getelementptr float, float* %phi2, i64 -1
+  store float %load1, float* %gep2
+  %load2 = load float, float* %phi1
+  store float %load2, float* %phi2
+  %dec.i = add nsw i64 %i, -1
+  %gep3 = getelementptr float, float* %phi2, i64 -2
+  %gep4 = getelementptr float, float* %phi1, i64 -2
+  %cond = icmp sgt i64 %dec.i, 0
+  br i1 %cond, label %for.body, label %end
+end:
+  ret void
+}
+
+define void @post-indexed-sub-double(double* %a, double* %b, i64 %count) nounwind {
+; CHECK-LABEL: post-indexed-sub-double
+; CHECK: ldr d{{[0-9]+}}, [x{{[0-9]+}}], #-16
+; CHECK: str d{{[0-9]+}}, [x{{[0-9]+}}], #-16
+  br label %for.body
+for.body:
+  %phi1 = phi double* [ %gep4, %for.body ], [ %b, %0 ]
+  %phi2 = phi double* [ %gep3, %for.body ], [ %a, %0 ]
+  %i = phi i64 [ %dec.i, %for.body], [ %count, %0 ]
+  %gep1 = getelementptr double, double* %phi1, i64 -1
+  %load1 = load double, double* %gep1
+  %gep2 = getelementptr double, double* %phi2, i64 -1
+  store double %load1, double* %gep2
+  %load2 = load double, double* %phi1
+  store double %load2, double* %phi2
+  %dec.i = add nsw i64 %i, -1
+  %gep3 = getelementptr double, double* %phi2, i64 -2
+  %gep4 = getelementptr double, double* %phi1, i64 -2
+  %cond = icmp sgt i64 %dec.i, 0
+  br i1 %cond, label %for.body, label %end
+end:
+  ret void
+}