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

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-indirectbr.ll	Mon Sep 08 22:06:00 2014 +0900
@@ -0,0 +1,36 @@
+; RUN: llc -O0 -fast-isel-abort -verify-machineinstrs -mtriple=arm64-apple-darwin < %s | FileCheck %s
+
+@fn.table = internal global [2 x i8*] [i8* blockaddress(@fn, %ZERO), i8* blockaddress(@fn, %ONE)], align 8
+
+define i32 @fn(i32 %target) nounwind {
+entry:
+; CHECK-LABEL: fn
+  %retval = alloca i32, align 4
+  %target.addr = alloca i32, align 4
+  store i32 %target, i32* %target.addr, align 4
+  %0 = load i32* %target.addr, align 4
+  %idxprom = zext i32 %0 to i64
+  %arrayidx = getelementptr inbounds [2 x i8*]* @fn.table, i32 0, i64 %idxprom
+  %1 = load i8** %arrayidx, align 8
+  br label %indirectgoto
+
+ZERO:                                             ; preds = %indirectgoto
+; CHECK: LBB0_1
+  store i32 0, i32* %retval
+  br label %return
+
+ONE:                                              ; preds = %indirectgoto
+; CHECK: LBB0_2
+  store i32 1, i32* %retval
+  br label %return
+
+return:                                           ; preds = %ONE, %ZERO
+  %2 = load i32* %retval
+  ret i32 %2
+
+indirectgoto:                                     ; preds = %entry
+; CHECK:      ldr [[REG:x[0-9]+]], [sp]
+; CHECK-NEXT: br [[REG]]
+  %indirect.goto.dest = phi i8* [ %1, %entry ]
+  indirectbr i8* %indirect.goto.dest, [label %ZERO, label %ONE]
+}