diff test/CodeGen/AArch64/arm64-fast-isel-gv.ll @ 77:54457678186b LLVM3.6

LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents
children afa8332a0e37
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/AArch64/arm64-fast-isel-gv.ll	Mon Sep 08 22:06:00 2014 +0900
@@ -0,0 +1,37 @@
+; RUN: llc -O0 -fast-isel-abort -verify-machineinstrs -mtriple=arm64-apple-darwin < %s | FileCheck %s
+
+; Test load/store of global value from global offset table.
+@seed = common global i64 0, align 8
+
+define void @Initrand() nounwind {
+entry:
+; CHECK: @Initrand
+; CHECK: adrp [[REG:x[0-9]+]], _seed@GOTPAGE
+; CHECK: ldr  [[REG2:x[0-9]+]], {{\[}}[[REG]], _seed@GOTPAGEOFF{{\]}}
+; CHECK: str  {{x[0-9]+}}, {{\[}}[[REG2]]{{\]}}
+  store i64 74755, i64* @seed, align 8
+  ret void
+}
+
+define i32 @Rand() nounwind {
+entry:
+; CHECK: @Rand
+; CHECK: adrp [[REG1:x[0-9]+]], _seed@GOTPAGE
+; CHECK: ldr  [[REG2:x[0-9]+]], {{\[}}[[REG1]], _seed@GOTPAGEOFF{{\]}}
+; CHECK: movz [[REG3:x[0-9]+]], #0x3619
+; CHECK: movz [[REG4:x[0-9]+]], #0x51d
+; CHECK: ldr  [[REG5:x[0-9]+]], {{\[}}[[REG2]]{{\]}}
+; CHECK: mul  [[REG6:x[0-9]+]], [[REG5]], [[REG4]]
+; CHECK: add  [[REG7:x[0-9]+]], [[REG6]], [[REG3]]
+; CHECK: and  [[REG8:x[0-9]+]], [[REG7]], #0xffff
+; CHECK: str  [[REG8]], {{\[}}[[REG1]]{{\]}}
+; CHECK: ldr  {{x[0-9]+}}, {{\[}}[[REG1]]{{\]}}
+  %0 = load i64* @seed, align 8
+  %mul = mul nsw i64 %0, 1309
+  %add = add nsw i64 %mul, 13849
+  %and = and i64 %add, 65535
+  store i64 %and, i64* @seed, align 8
+  %1 = load i64* @seed, align 8
+  %conv = trunc i64 %1 to i32
+  ret i32 %conv
+}