; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
@g = global i32 1
+@h = global i32 1, align 2, section "foo"
; Check unsigned comparison.
define i64 @f1(i64 %src1) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
; CHECK: clgfrl %r2, g
; CHECK-NEXT: jl
; CHECK: br %r14
entry:
- %val = load i32 *@g
+ %val = load i32 , i32 *@g
%src2 = zext i32 %val to i64
%cond = icmp ult i64 %src1, %src2
br i1 %cond, label %exit, label %mulb
; Check signed comparison.
define i64 @f2(i64 %src1) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
; CHECK-NOT: clgfrl
; CHECK: br %r14
entry:
- %val = load i32 *@g
+ %val = load i32 , i32 *@g
%src2 = zext i32 %val to i64
%cond = icmp slt i64 %src1, %src2
br i1 %cond, label %exit, label %mulb
; Check equality.
define i64 @f3(i64 %src1) {
-; CHECK: f3:
+; CHECK-LABEL: f3:
; CHECK: clgfrl %r2, g
; CHECK-NEXT: je
; CHECK: br %r14
entry:
- %val = load i32 *@g
+ %val = load i32 , i32 *@g
%src2 = zext i32 %val to i64
%cond = icmp eq i64 %src1, %src2
br i1 %cond, label %exit, label %mulb
; Check inequality.
define i64 @f4(i64 %src1) {
-; CHECK: f4:
+; CHECK-LABEL: f4:
; CHECK: clgfrl %r2, g
; CHECK-NEXT: jlh
; CHECK: br %r14
entry:
- %val = load i32 *@g
+ %val = load i32 , i32 *@g
%src2 = zext i32 %val to i64
%cond = icmp ne i64 %src1, %src2
br i1 %cond, label %exit, label %mulb
%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
ret i64 %res
}
+
+; Repeat f1 with an unaligned address.
+define i64 @f5(i64 %src1) {
+; CHECK-LABEL: f5:
+; CHECK: larl [[REG:%r[0-5]]], h
+; CHECK: clgf %r2, 0([[REG]])
+; CHECK-NEXT: jl
+; CHECK: br %r14
+entry:
+ %val = load i32 , i32 *@h, align 2
+ %src2 = zext i32 %val to i64
+ %cond = icmp ult 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
+}
+
+; Check the comparison can be reversed if that allows CLGFRL to be used.
+define i64 @f6(i64 %src2) {
+; CHECK-LABEL: f6:
+; CHECK: clgfrl %r2, g
+; CHECK-NEXT: jh {{\.L.*}}
+; CHECK: br %r14
+entry:
+ %val = load i32 , i32 *@g
+ %src1 = zext i32 %val to i64
+ %cond = icmp ult i64 %src1, %src2
+ br i1 %cond, label %exit, label %mulb
+mulb:
+ %mul = mul i64 %src2, %src2
+ br label %exit
+exit:
+ %res = phi i64 [ %src2, %entry ], [ %mul, %mulb ]
+ ret i64 %res
+}