vendor/llvm/llvm-r72732

1 files changed, 20 insertions, 0 deletions

diff --git a/test/Transforms/InstCombine/apint-cast.ll b/test/Transforms/InstCombine/apint-cast.ll
new file mode 100644
index 000000000000..dd0014640021
--- /dev/null
+++ b/test/Transforms/InstCombine/apint-cast.ll
@@ -0,0 +1,20 @@
+; Tests to make sure elimination of casts is working correctly
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | notcast
+
+define i17 @test1(i17 %a) {
+        %tmp = zext i17 %a to i37               ; <i37> [#uses=2]
+        %tmp21 = lshr i37 %tmp, 8               ; <i37> [#uses=1]
+        %tmp5 = shl i37 %tmp, 8         ; <i37> [#uses=1]
+        %tmp.upgrd.32 = or i37 %tmp21, %tmp5            ; <i37> [#uses=1]
+        %tmp.upgrd.3 = trunc i37 %tmp.upgrd.32 to i17   ; <i17> [#uses=1]
+        ret i17 %tmp.upgrd.3
+}
+
+define i167 @test2(i167 %a) {
+        %tmp = zext i167 %a to i577               ; <i577> [#uses=2]
+        %tmp21 = lshr i577 %tmp, 9               ; <i577> [#uses=1]
+        %tmp5 = shl i577 %tmp, 8         ; <i577> [#uses=1]
+        %tmp.upgrd.32 = or i577 %tmp21, %tmp5            ; <i577> [#uses=1]
+        %tmp.upgrd.3 = trunc i577 %tmp.upgrd.32 to i167  ; <i167> [#uses=1]
+        ret i167 %tmp.upgrd.3
+}