CodeGen peephole: fold redundant phys reg copies

[oota-llvm.git] / test / CodeGen / X86 / narrow-shl-cst.ll

diff --git a/test/CodeGen/X86/narrow-shl-cst.ll b/test/CodeGen/X86/narrow-shl-cst.ll
index 40b976014a77fde602062e3ab922fd93f5d8b368..c9e9a3d2a976536ec0e33b4747debc89e9be8e9c 100644 (file)
--- a/test/CodeGen/X86/narrow-shl-cst.ll
+++ b/test/CodeGen/X86/narrow-shl-cst.ll
@@ -99,3 +99,26 @@ define i64 @test11(i64 %x) nounwind {
 ; CHECK: xorq $-65536
 ; CHECK: shlq $33
 }
+
+; PR23098
+define i32 @test12(i32 %x, i32* %y) nounwind {
+  %and = shl i32 %x, 1
+  %shl = and i32 %and, 255
+  store i32 %shl, i32* %y
+  ret i32 %shl
+; CHECK-LABEL: test12:
+; CHECK: andl $127
+; CHECK-NEXT: addl
+; CHECK-NOT: shl
+}
+
+define i64 @test13(i64 %x, i64* %y) nounwind {
+  %and = shl i64 %x, 1
+  %shl = and i64 %and, 255
+  store i64 %shl, i64* %y
+  ret i64 %shl
+; CHECK-LABEL: test13:
+; CHECK: andq $127
+; CHECK-NEXT: addq
+; CHECK-NOT: shl
+}