The BLX instruction is encoded differently than the BL, because why not? In

[oota-llvm.git] / test / Analysis / GlobalsModRef / purecse.ll

diff --git a/test/Analysis/GlobalsModRef/purecse.ll b/test/Analysis/GlobalsModRef/purecse.ll
index 17e6a0a521a4bd544e274d85d3a2c0143f110d50..994aff8d4c684e4f80d4094eb5481f74cc1addb5 100644 (file)
--- a/test/Analysis/GlobalsModRef/purecse.ll
+++ b/test/Analysis/GlobalsModRef/purecse.ll
@@ -1,15 +1,23 @@
 ; Test that pure functions are cse'd away
+; RUN: opt < %s -globalsmodref-aa -gvn -instcombine | \
+; RUN: llvm-dis | not grep sub
 
-; RUN: llvm-as < %s | opt -globalsmodref-aa -load-vn -gcse -instcombine -adce| llvm-dis | not grep call
+define i32 @pure(i32 %X) {
+        %Y = add i32 %X, 1              ; <i32> [#uses=1]
+        ret i32 %Y
+}
 
-int %pure(int %X) {
-       %Y = add int %X, 1
-       ret int %Y
+define i32 @test1(i32 %X) {
+        %A = call i32 @pure( i32 %X )           ; <i32> [#uses=1]
+        %B = call i32 @pure( i32 %X )           ; <i32> [#uses=1]
+        %C = sub i32 %A, %B             ; <i32> [#uses=1]
+        ret i32 %C
 }
 
-int %test(int %X) {
-       %A = call int %pure(int %X)
-       %B = call int %pure(int %X)
-       %C = sub int %A, %B
-       ret int %C
+define i32 @test2(i32 %X, i32* %P) {
+        %A = call i32 @pure( i32 %X )           ; <i32> [#uses=1]
+        store i32 %X, i32* %P ;; Does not invalidate 'pure' call.
+        %B = call i32 @pure( i32 %X )           ; <i32> [#uses=1]
+        %C = sub i32 %A, %B             ; <i32> [#uses=1]
+        ret i32 %C
 }