[SystemZ] Enable unaligned accesses
The code to distinguish between unaligned and aligned addresses was
already there, so this is mostly just a switch-on-and-test process.
llvm-svn: 182920
diff --git a/llvm/test/CodeGen/SystemZ/int-cmp-43.ll b/llvm/test/CodeGen/SystemZ/int-cmp-43.ll
index 3df25fa..7d4adca 100644
--- a/llvm/test/CodeGen/SystemZ/int-cmp-43.ll
+++ b/llvm/test/CodeGen/SystemZ/int-cmp-43.ll
@@ -4,6 +4,7 @@
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
@g = global i64 1
+@h = global i64 1, align 4, section "foo"
; Check signed comparisons.
define i64 @f1(i64 %src1) {
@@ -76,3 +77,22 @@
%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
ret i64 %res
}
+
+; Repeat f1 with an unaligned address.
+define i64 @f5(i64 %src1) {
+; CHECK: f5:
+; CHECK: larl [[REG:%r[0-5]]], h
+; CHECK: cg %r2, 0([[REG]])
+; CHECK-NEXT: jl
+; CHECK: br %r14
+entry:
+ %src2 = load i64 *@h, align 4
+ %cond = icmp slt i64 %src1, %src2
+ br i1 %cond, label %exit, label %mulb
+mulb:
+ %mul = mul i64 %src1, %src1
+ br label %exit
+exit:
+ %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
+ ret i64 %res
+}