It's not necessary to do rounding for alloca operations when the requested

alignment is equal to the stack alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 22 insertions, 0 deletions

diff --git a/test/Transforms/InstCombine/apint-div2.ll b/test/Transforms/InstCombine/apint-div2.ll
new file mode 100644
index 0000000..2aa2c3a
--- /dev/null
+++ b/test/Transforms/InstCombine/apint-div2.ll
@@ -0,0 +1,22 @@
+; This test makes sure that div instructions are properly eliminated.
+; This test is for Integer BitWidth >= 64 && BitWidth <= 1024.
+;
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep div
+
+
+define i333 @test1(i333 %X) {
+    %Y = udiv i333 %X, 70368744177664
+    ret i333 %Y
+}
+
+define i499 @test2(i499 %X) {
+    %tmp.0 = shl i499 4096, 197
+    %Y = udiv i499 %X, %tmp.0
+    ret i499 %Y
+}
+
+define i599 @test3(i599 %X, i1 %C) {
+        %V = select i1 %C, i599 70368744177664, i599 4096
+        %R = udiv i599 %X, %V
+        ret i599 %R
+}