CodeGen peephole: fold redundant phys reg copies

[oota-llvm.git] / test / CodeGen / X86 / tail-opts.ll

diff --git a/test/CodeGen/X86/tail-opts.ll b/test/CodeGen/X86/tail-opts.ll
index 4a7f5fe02e8c26ab535239ec0c313ea5e57ebd83..c522ba60d6bf6d411490a5b0fc2a4541208f13e2 100644 (file)
--- a/test/CodeGen/X86/tail-opts.ll
+++ b/test/CodeGen/X86/tail-opts.ll
@@ -127,11 +127,11 @@ altret:
 define i1 @dont_merge_oddly(float* %result) nounwind {
 entry:
   %tmp4 = getelementptr float, float* %result, i32 2
-  %tmp5 = load float* %tmp4, align 4
+  %tmp5 = load float, float* %tmp4, align 4
   %tmp7 = getelementptr float, float* %result, i32 4
-  %tmp8 = load float* %tmp7, align 4
+  %tmp8 = load float, float* %tmp7, align 4
   %tmp10 = getelementptr float, float* %result, i32 6
-  %tmp11 = load float* %tmp10, align 4
+  %tmp11 = load float, float* %tmp10, align 4
   %tmp12 = fcmp olt float %tmp8, %tmp11
   br i1 %tmp12, label %bb, label %bb21
 
@@ -179,7 +179,7 @@ bb30:
 
 define fastcc void @c_expand_expr_stmt(%union.tree_node* %expr) nounwind {
 entry:
-  %tmp4 = load i8* null, align 8                  ; <i8> [#uses=3]
+  %tmp4 = load i8, i8* null, align 8                  ; <i8> [#uses=3]
   switch i8 %tmp4, label %bb3 [
     i8 18, label %bb
   ]
@@ -199,9 +199,9 @@ bb2.i:                                            ; preds = %bb
   br label %bb3
 
 lvalue_p.exit:                                    ; preds = %bb.i
-  %tmp21 = load %union.tree_node** null, align 8  ; <%union.tree_node*> [#uses=3]
+  %tmp21 = load %union.tree_node*, %union.tree_node** null, align 8  ; <%union.tree_node*> [#uses=3]
   %tmp22 = getelementptr inbounds %union.tree_node, %union.tree_node* %tmp21, i64 0, i32 0, i32 0, i64 0 ; <i8*> [#uses=1]
-  %tmp23 = load i8* %tmp22, align 8               ; <i8> [#uses=1]
+  %tmp23 = load i8, i8* %tmp22, align 8               ; <i8> [#uses=1]
   %tmp24 = zext i8 %tmp23 to i32                  ; <i32> [#uses=1]
   switch i32 %tmp24, label %lvalue_p.exit4 [
     i32 0, label %bb2.i3
@@ -211,9 +211,9 @@ lvalue_p.exit:                                    ; preds = %bb.i
 bb.i1:                                            ; preds = %lvalue_p.exit
   %tmp25 = getelementptr inbounds %union.tree_node, %union.tree_node* %tmp21, i64 0, i32 0, i32 2 ; <i32*> [#uses=1]
   %tmp26 = bitcast i32* %tmp25 to %union.tree_node** ; <%union.tree_node**> [#uses=1]
-  %tmp27 = load %union.tree_node** %tmp26, align 8 ; <%union.tree_node*> [#uses=2]
+  %tmp27 = load %union.tree_node*, %union.tree_node** %tmp26, align 8 ; <%union.tree_node*> [#uses=2]
   %tmp28 = getelementptr inbounds %union.tree_node, %union.tree_node* %tmp27, i64 0, i32 0, i32 0, i64 16 ; <i8*> [#uses=1]
-  %tmp29 = load i8* %tmp28, align 8               ; <i8> [#uses=1]
+  %tmp29 = load i8, i8* %tmp28, align 8               ; <i8> [#uses=1]
   %tmp30 = zext i8 %tmp29 to i32                  ; <i32> [#uses=1]
   switch i32 %tmp30, label %lvalue_p.exit4 [
     i32 0, label %bb2.i.i2
@@ -228,9 +228,9 @@ bb.i.i:                                           ; preds = %bb.i1
 bb2.i.i2:                                         ; preds = %bb.i1
   %tmp35 = getelementptr inbounds %union.tree_node, %union.tree_node* %tmp27, i64 0, i32 0, i32 0, i64 8 ; <i8*> [#uses=1]
   %tmp36 = bitcast i8* %tmp35 to %union.tree_node** ; <%union.tree_node**> [#uses=1]
-  %tmp37 = load %union.tree_node** %tmp36, align 8 ; <%union.tree_node*> [#uses=1]
+  %tmp37 = load %union.tree_node*, %union.tree_node** %tmp36, align 8 ; <%union.tree_node*> [#uses=1]
   %tmp38 = getelementptr inbounds %union.tree_node, %union.tree_node* %tmp37, i64 0, i32 0, i32 0, i64 16 ; <i8*> [#uses=1]
-  %tmp39 = load i8* %tmp38, align 8               ; <i8> [#uses=1]
+  %tmp39 = load i8, i8* %tmp38, align 8               ; <i8> [#uses=1]
   switch i8 %tmp39, label %bb2 [
     i8 16, label %lvalue_p.exit4
     i8 23, label %lvalue_p.exit4
@@ -239,9 +239,9 @@ bb2.i.i2:                                         ; preds = %bb.i1
 bb2.i3:                                           ; preds = %lvalue_p.exit
   %tmp40 = getelementptr inbounds %union.tree_node, %union.tree_node* %tmp21, i64 0, i32 0, i32 0, i64 8 ; <i8*> [#uses=1]
   %tmp41 = bitcast i8* %tmp40 to %union.tree_node** ; <%union.tree_node**> [#uses=1]
-  %tmp42 = load %union.tree_node** %tmp41, align 8 ; <%union.tree_node*> [#uses=1]
+  %tmp42 = load %union.tree_node*, %union.tree_node** %tmp41, align 8 ; <%union.tree_node*> [#uses=1]
   %tmp43 = getelementptr inbounds %union.tree_node, %union.tree_node* %tmp42, i64 0, i32 0, i32 0, i64 16 ; <i8*> [#uses=1]
-  %tmp44 = load i8* %tmp43, align 8               ; <i8> [#uses=1]
+  %tmp44 = load i8, i8* %tmp43, align 8               ; <i8> [#uses=1]
   switch i8 %tmp44, label %bb2 [
     i8 16, label %lvalue_p.exit4
     i8 23, label %lvalue_p.exit4
@@ -371,6 +371,44 @@ return:
   ret void
 }
 
+; two_minsize - Same as two, but with minsize instead of optsize.
+
+; CHECK-LABEL: two_minsize:
+; CHECK-NOT: XYZ
+; CHECK: ret
+; CHECK: movl $0, XYZ(%rip)
+; CHECK: movl $1, XYZ(%rip)
+; CHECK-NOT: XYZ
+
+define void @two_minsize() nounwind minsize {
+entry:
+  %0 = icmp eq i32 undef, 0
+  br i1 %0, label %bbx, label %bby
+
+bby:
+  switch i32 undef, label %bb7 [
+    i32 16, label %return
+  ]
+
+bb7:
+  store volatile i32 0, i32* @XYZ
+  store volatile i32 1, i32* @XYZ
+  unreachable
+
+bbx:
+  switch i32 undef, label %bb12 [
+    i32 128, label %return
+  ]
+
+bb12:
+  store volatile i32 0, i32* @XYZ
+  store volatile i32 1, i32* @XYZ
+  unreachable
+
+return:
+  ret void
+}
+
 ; two_nosize - Same as two, but without the optsize attribute.
 ; Now two instructions are enough to be tail-duplicated.