Fix pointer info on PPC byval stores

[oota-llvm.git] / test / Transforms / InstCombine / nsw.ll

diff --git a/test/Transforms/InstCombine/nsw.ll b/test/Transforms/InstCombine/nsw.ll
index 821cebed30bba047068dc80115a464a96e3be613..0bed76717ce9db13a4d0427b51c6366cad4226a1 100644 (file)
--- a/test/Transforms/InstCombine/nsw.ll
+++ b/test/Transforms/InstCombine/nsw.ll
@@ -1,20 +1,83 @@
 ; RUN: opt < %s -instcombine -S | FileCheck %s
 
-; CHECK: define i32 @foo
-; %y = sub i32 0, %x
-; %z = sdiv i32 %y, 337
-; ret i32 %y
-define i32 @foo(i32 %x) {
+; CHECK-LABEL: @sub1(
+; CHECK: %y = sub i32 0, %x
+; CHECK: %z = sdiv i32 %y, 337
+; CHECK: ret i32 %z
+define i32 @sub1(i32 %x) {
   %y = sub i32 0, %x
   %z = sdiv i32 %y, 337
-  ret i32 %y
+  ret i32 %z
 }
 
-; CHECK: define i32 @bar
-; %y = sdiv i32 %x, -337
-; ret i32 %y
-define i32 @bar(i32 %x) {
+; CHECK-LABEL: @sub2(
+; CHECK: %z = sdiv i32 %x, -337
+; CHECK: ret i32 %z
+define i32 @sub2(i32 %x) {
   %y = sub nsw i32 0, %x
   %z = sdiv i32 %y, 337
-  ret i32 %y
+  ret i32 %z
+}
+
+; CHECK-LABEL: @shl_icmp(
+; CHECK: %B = icmp eq i64 %X, 0
+; CHECK: ret i1 %B
+define i1 @shl_icmp(i64 %X) nounwind {
+  %A = shl nuw i64 %X, 2   ; X/4
+  %B = icmp eq i64 %A, 0
+  ret i1 %B
+}
+
+; CHECK-LABEL: @shl1(
+; CHECK: %B = shl nuw nsw i64 %A, 8
+; CHECK: ret i64 %B
+define i64 @shl1(i64 %X, i64* %P) nounwind {
+  %A = and i64 %X, 312
+  store i64 %A, i64* %P  ; multiple uses of A.
+  %B = shl i64 %A, 8
+  ret i64 %B
+}
+
+; CHECK-LABEL: @preserve1(
+; CHECK: add nsw i32 %x, 5
+define i32 @preserve1(i32 %x) nounwind {
+  %add = add nsw i32 %x, 2
+  %add3 = add nsw i32 %add, 3
+  ret i32 %add3
+}
+
+; CHECK-LABEL: @nopreserve1(
+; CHECK: add i8 %x, -126
+define i8 @nopreserve1(i8 %x) nounwind {
+  %add = add nsw i8 %x, 127
+  %add3 = add nsw i8 %add, 3
+  ret i8 %add3
+}
+
+; CHECK-LABEL: @nopreserve2(
+; CHECK: add i8 %x, 3
+define i8 @nopreserve2(i8 %x) nounwind {
+  %add = add i8 %x, 1
+  %add3 = add nsw i8 %add, 2
+  ret i8 %add3
+}
+
+; CHECK-LABEL: @nopreserve3(
+; CHECK: add i8 %A, %B
+; CHECK: add i8
+define i8 @nopreserve3(i8 %A, i8 %B) nounwind {
+  %x = add i8 %A, 10
+  %y = add i8 %B, 10
+  %add = add nsw i8 %x, %y
+  ret i8 %add
+}
+
+; CHECK-LABEL: @nopreserve4(
+; CHECK: add i8 %A, %B
+; CHECK: add i8
+define i8 @nopreserve4(i8 %A, i8 %B) nounwind {
+  %x = add nsw i8 %A, 10
+  %y = add nsw i8 %B, 10
+  %add = add nsw i8 %x, %y
+  ret i8 %add
 }