1 files changed, 74 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/arm64-spill-lr.ll b/test/CodeGen/AArch64/arm64-spill-lr.ll
new file mode 100644
index 0000000000..fb6588e6ae
--- /dev/null
+++ b/test/CodeGen/AArch64/arm64-spill-lr.ll
@@ -0,0 +1,74 @@
+; RUN: llc -mtriple=arm64-apple-ios < %s
+@bar = common global i32 0, align 4
+
+; Leaf function which uses all callee-saved registers and allocates >= 256 bytes on the stack
+; this will cause processFunctionBeforeCalleeSavedScan() to spill LR as an additional scratch
+; register.
+;
+; This is a crash-only regression test for rdar://15124582.
+define i32 @foo(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h) nounwind {
+entry:
+  %stack = alloca [128 x i32], align 4
+  %0 = bitcast [128 x i32]* %stack to i8*
+  %idxprom = sext i32 %a to i64
+  %arrayidx = getelementptr inbounds [128 x i32]* %stack, i64 0, i64 %idxprom
+  store i32 %b, i32* %arrayidx, align 4
+  %1 = load volatile i32* @bar, align 4
+  %2 = load volatile i32* @bar, align 4
+  %3 = load volatile i32* @bar, align 4
+  %4 = load volatile i32* @bar, align 4
+  %5 = load volatile i32* @bar, align 4
+  %6 = load volatile i32* @bar, align 4
+  %7 = load volatile i32* @bar, align 4
+  %8 = load volatile i32* @bar, align 4
+  %9 = load volatile i32* @bar, align 4
+  %10 = load volatile i32* @bar, align 4
+  %11 = load volatile i32* @bar, align 4
+  %12 = load volatile i32* @bar, align 4
+  %13 = load volatile i32* @bar, align 4
+  %14 = load volatile i32* @bar, align 4
+  %15 = load volatile i32* @bar, align 4
+  %16 = load volatile i32* @bar, align 4
+  %17 = load volatile i32* @bar, align 4
+  %18 = load volatile i32* @bar, align 4
+  %19 = load volatile i32* @bar, align 4
+  %20 = load volatile i32* @bar, align 4
+  %idxprom1 = sext i32 %c to i64
+  %arrayidx2 = getelementptr inbounds [128 x i32]* %stack, i64 0, i64 %idxprom1
+  %21 = load i32* %arrayidx2, align 4
+  %factor = mul i32 %h, -2
+  %factor67 = mul i32 %g, -2
+  %factor68 = mul i32 %f, -2
+  %factor69 = mul i32 %e, -2
+  %factor70 = mul i32 %d, -2
+  %factor71 = mul i32 %c, -2
+  %factor72 = mul i32 %b, -2
+  %sum = add i32 %2, %1
+  %sum73 = add i32 %sum, %3
+  %sum74 = add i32 %sum73, %4
+  %sum75 = add i32 %sum74, %5
+  %sum76 = add i32 %sum75, %6
+  %sum77 = add i32 %sum76, %7
+  %sum78 = add i32 %sum77, %8
+  %sum79 = add i32 %sum78, %9
+  %sum80 = add i32 %sum79, %10
+  %sum81 = add i32 %sum80, %11
+  %sum82 = add i32 %sum81, %12
+  %sum83 = add i32 %sum82, %13
+  %sum84 = add i32 %sum83, %14
+  %sum85 = add i32 %sum84, %15
+  %sum86 = add i32 %sum85, %16
+  %sum87 = add i32 %sum86, %17
+  %sum88 = add i32 %sum87, %18
+  %sum89 = add i32 %sum88, %19
+  %sum90 = add i32 %sum89, %20
+  %sub15 = sub i32 %21, %sum90
+  %sub16 = add i32 %sub15, %factor
+  %sub17 = add i32 %sub16, %factor67
+  %sub18 = add i32 %sub17, %factor68
+  %sub19 = add i32 %sub18, %factor69
+  %sub20 = add i32 %sub19, %factor70
+  %sub21 = add i32 %sub20, %factor71
+  %add = add i32 %sub21, %factor72
+  ret i32 %add
+}