136 lines
3.0 KiB
LLVM
136 lines
3.0 KiB
LLVM
; Test 32-bit comparisons in which the second operand is a PC-relative
|
|
; variable.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
|
|
@g = dso_local global i32 1
|
|
@h = dso_local global i32 1, align 2, section "foo"
|
|
|
|
; Check signed comparisons.
|
|
define dso_local i32 @f1(i32 %src1) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: crl %r2, g
|
|
; CHECK-NEXT: blr %r14
|
|
; CHECK: br %r14
|
|
entry:
|
|
%src2 = load i32, i32 *@g
|
|
%cond = icmp slt i32 %src1, %src2
|
|
br i1 %cond, label %exit, label %mulb
|
|
mulb:
|
|
%mul = mul i32 %src1, %src1
|
|
br label %exit
|
|
exit:
|
|
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
|
|
ret i32 %res
|
|
}
|
|
|
|
; Check unsigned comparisons.
|
|
define dso_local i32 @f2(i32 %src1) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: clrl %r2, g
|
|
; CHECK-NEXT: blr %r14
|
|
; CHECK: br %r14
|
|
entry:
|
|
%src2 = load i32, i32 *@g
|
|
%cond = icmp ult i32 %src1, %src2
|
|
br i1 %cond, label %exit, label %mulb
|
|
mulb:
|
|
%mul = mul i32 %src1, %src1
|
|
br label %exit
|
|
exit:
|
|
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
|
|
ret i32 %res
|
|
}
|
|
|
|
; Check equality, which can use CRL or CLRL.
|
|
define dso_local i32 @f3(i32 %src1) {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: c{{l?}}rl %r2, g
|
|
; CHECK-NEXT: ber %r14
|
|
; CHECK: br %r14
|
|
entry:
|
|
%src2 = load i32, i32 *@g
|
|
%cond = icmp eq i32 %src1, %src2
|
|
br i1 %cond, label %exit, label %mulb
|
|
mulb:
|
|
%mul = mul i32 %src1, %src1
|
|
br label %exit
|
|
exit:
|
|
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
|
|
ret i32 %res
|
|
}
|
|
|
|
; ...likewise inequality.
|
|
define dso_local i32 @f4(i32 %src1) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: c{{l?}}rl %r2, g
|
|
; CHECK-NEXT: blhr %r14
|
|
; CHECK: br %r14
|
|
entry:
|
|
%src2 = load i32, i32 *@g
|
|
%cond = icmp ne i32 %src1, %src2
|
|
br i1 %cond, label %exit, label %mulb
|
|
mulb:
|
|
%mul = mul i32 %src1, %src1
|
|
br label %exit
|
|
exit:
|
|
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
|
|
ret i32 %res
|
|
}
|
|
|
|
; Repeat f1 with an unaligned address.
|
|
define dso_local i32 @f5(i32 %src1) {
|
|
; CHECK-LABEL: f5:
|
|
; CHECK: larl [[REG:%r[0-5]]], h
|
|
; CHECK: c %r2, 0([[REG]])
|
|
; CHECK-NEXT: blr %r14
|
|
; CHECK: br %r14
|
|
entry:
|
|
%src2 = load i32, i32 *@h, align 2
|
|
%cond = icmp slt i32 %src1, %src2
|
|
br i1 %cond, label %exit, label %mulb
|
|
mulb:
|
|
%mul = mul i32 %src1, %src1
|
|
br label %exit
|
|
exit:
|
|
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
|
|
ret i32 %res
|
|
}
|
|
|
|
; Repeat f2 with an unaligned address.
|
|
define dso_local i32 @f6(i32 %src1) {
|
|
; CHECK-LABEL: f6:
|
|
; CHECK: larl [[REG:%r[0-5]]], h
|
|
; CHECK: cl %r2, 0([[REG]])
|
|
; CHECK-NEXT: blr %r14
|
|
; CHECK: br %r14
|
|
entry:
|
|
%src2 = load i32, i32 *@h, align 2
|
|
%cond = icmp ult i32 %src1, %src2
|
|
br i1 %cond, label %exit, label %mulb
|
|
mulb:
|
|
%mul = mul i32 %src1, %src1
|
|
br label %exit
|
|
exit:
|
|
%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
|
|
ret i32 %res
|
|
}
|
|
|
|
; Check the comparison can be reversed if that allows CRL to be used.
|
|
define dso_local i32 @f7(i32 %src2) {
|
|
; CHECK-LABEL: f7:
|
|
; CHECK: crl %r2, g
|
|
; CHECK-NEXT: bhr %r14
|
|
; CHECK: br %r14
|
|
entry:
|
|
%src1 = load i32, i32 *@g
|
|
%cond = icmp slt i32 %src1, %src2
|
|
br i1 %cond, label %exit, label %mulb
|
|
mulb:
|
|
%mul = mul i32 %src2, %src2
|
|
br label %exit
|
|
exit:
|
|
%res = phi i32 [ %src2, %entry ], [ %mul, %mulb ]
|
|
ret i32 %res
|
|
}
|