a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
117 lines
2.6 KiB
LLVM
117 lines
2.6 KiB
LLVM
; Test 64-bit comparisons in which the second operand is a PC-relative
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; variable.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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@g = dso_local global i64 1
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@h = dso_local global i64 1, align 4, section "foo"
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; Check signed comparisons.
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define dso_local i64 @f1(i64 %src1) {
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; CHECK-LABEL: f1:
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; CHECK: cgrl %r2, g
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; CHECK-NEXT: blr %r14
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; CHECK: br %r14
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entry:
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%src2 = load i64, ptr@g
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%cond = icmp slt i64 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i64 %src1, %src1
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br label %exit
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exit:
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%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
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ret i64 %res
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}
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; Check unsigned comparisons.
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define dso_local i64 @f2(i64 %src1) {
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; CHECK-LABEL: f2:
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; CHECK: clgrl %r2, g
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; CHECK-NEXT: blr %r14
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; CHECK: br %r14
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entry:
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%src2 = load i64, ptr@g
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%cond = icmp ult i64 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i64 %src1, %src1
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br label %exit
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exit:
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%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
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ret i64 %res
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}
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; Check equality, which can use CRL or CLRL.
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define dso_local i64 @f3(i64 %src1) {
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; CHECK-LABEL: f3:
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; CHECK: c{{l?}}grl %r2, g
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; CHECK-NEXT: ber %r14
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; CHECK: br %r14
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entry:
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%src2 = load i64, ptr@g
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%cond = icmp eq i64 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i64 %src1, %src1
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br label %exit
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exit:
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%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
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ret i64 %res
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}
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; ...likewise inequality.
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define dso_local i64 @f4(i64 %src1) {
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; CHECK-LABEL: f4:
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; CHECK: c{{l?}}grl %r2, g
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; CHECK-NEXT: blhr %r14
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; CHECK: br %r14
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entry:
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%src2 = load i64, ptr@g
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%cond = icmp ne i64 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i64 %src1, %src1
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br label %exit
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exit:
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%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
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ret i64 %res
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}
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; Repeat f1 with an unaligned address.
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define dso_local i64 @f5(i64 %src1) {
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; CHECK-LABEL: f5:
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; CHECK: larl [[REG:%r[0-5]]], h
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; CHECK: cg %r2, 0([[REG]])
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; CHECK-NEXT: blr %r14
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; CHECK: br %r14
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entry:
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%src2 = load i64, ptr@h, align 4
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%cond = icmp slt i64 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i64 %src1, %src1
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br label %exit
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exit:
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%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
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ret i64 %res
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}
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; Check the comparison can be reversed if that allows CGRL to be used.
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define dso_local i64 @f6(i64 %src2) {
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; CHECK-LABEL: f6:
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; CHECK: cgrl %r2, g
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; CHECK-NEXT: bhr %r14
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; CHECK: br %r14
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entry:
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%src1 = load i64, ptr@g
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%cond = icmp slt i64 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i64 %src2, %src2
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br label %exit
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exit:
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%res = phi i64 [ %src2, %entry ], [ %mul, %mulb ]
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ret i64 %res
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}
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