Use sext in fast isel.

[oota-llvm.git] / test / CodeGen / X86 / fast-isel-sext.ll

diff --git a/test/CodeGen/X86/fast-isel-sext.ll b/test/CodeGen/X86/fast-isel-sext.ll
new file mode 100644 (file)
index 0000000..ca1558e
--- /dev/null
+++ b/test/CodeGen/X86/fast-isel-sext.ll
@@ -0,0 +1,9 @@
+; RUN: llc -mtriple=x86_64-linux -fast-isel -show-mc-encoding < %s | FileCheck %s
+
+; CHECK-LABEL: f:
+; CHECK:       addl $-2, %eax         # encoding: [0x83,0xc0,0xfe]
+define i32 @f(i32* %y) {
+  %x = load i32, i32* %y
+  %dec = add i32 %x, -2
+  ret i32 %dec
+}