Temporarily revert "Subtract isn't commutative, fix this for MMX psub."

[oota-llvm.git] / test / CodeGen / ARM / ldr_post.ll

diff --git a/test/CodeGen/ARM/ldr_post.ll b/test/CodeGen/ARM/ldr_post.ll
index 97a48e1377e55cffe7438298b6df235214d191a0..a6ca434483801c62db401c167f36cf01d31c91f2 100644 (file)
--- a/test/CodeGen/ARM/ldr_post.ll
+++ b/test/CodeGen/ARM/ldr_post.ll
@@ -1,7 +1,10 @@
-; RUN: llc < %s -march=arm | \
-; RUN:   grep {ldr.*\\\[.*\],} | count 1
+; RUN: llc < %s -march=arm | FileCheck %s
+; RUN: llc < %s -march=arm -mcpu=swift | FileCheck %s
 
-define i32 @test(i32 %a, i32 %b, i32 %c) {
+; CHECK: test1:
+; CHECK: ldr {{.*, \[.*]}}, -r2
+; CHECK-NOT: ldr
+define i32 @test1(i32 %a, i32 %b, i32 %c) {
         %tmp1 = mul i32 %a, %b          ; <i32> [#uses=2]
         %tmp2 = inttoptr i32 %tmp1 to i32*              ; <i32*> [#uses=1]
         %tmp3 = load i32* %tmp2         ; <i32> [#uses=1]
@@ -10,3 +13,14 @@ define i32 @test(i32 %a, i32 %b, i32 %c) {
         ret i32 %tmp5
 }
 
+; CHECK: test2:
+; CHECK: ldr {{.*, \[.*\]}}, #-16
+; CHECK-NOT: ldr
+define i32 @test2(i32 %a, i32 %b) {
+        %tmp1 = mul i32 %a, %b          ; <i32> [#uses=2]
+        %tmp2 = inttoptr i32 %tmp1 to i32*              ; <i32*> [#uses=1]
+        %tmp3 = load i32* %tmp2         ; <i32> [#uses=1]
+        %tmp4 = sub i32 %tmp1, 16               ; <i32> [#uses=1]
+        %tmp5 = mul i32 %tmp4, %tmp3            ; <i32> [#uses=1]
+        ret i32 %tmp5
+}