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.
122 lines
2.7 KiB
LLVM
122 lines
2.7 KiB
LLVM
; Test 64-bit comparisons in which the second operand is sign-extended
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; from a PC-relative i16.
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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 i16 1
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@h = dso_local global i16 1, align 1, section "foo"
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; Check signed comparison.
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define dso_local i64 @f1(i64 %src1) {
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; CHECK-LABEL: f1:
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; CHECK: cghrl %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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%val = load i16, ptr@g
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%src2 = sext i16 %val to i64
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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 comparison, which cannot use CHRL.
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define dso_local i64 @f2(i64 %src1) {
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; CHECK-LABEL: f2:
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; CHECK-NOT: cghrl
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; CHECK: br %r14
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entry:
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%val = load i16, ptr@g
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%src2 = sext i16 %val to i64
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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.
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define dso_local i64 @f3(i64 %src1) {
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; CHECK-LABEL: f3:
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; CHECK: cghrl %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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%val = load i16, ptr@g
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%src2 = sext i16 %val to i64
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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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; Check inequality.
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define dso_local i64 @f4(i64 %src1) {
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; CHECK-LABEL: f4:
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; CHECK: cghrl %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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%val = load i16, ptr@g
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%src2 = sext i16 %val to i64
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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: lgrl [[REG:%r[0-5]]], h@GOT
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; CHECK: cgh %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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%val = load i16, ptr@h, align 1
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%src2 = sext i16 %val to i64
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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 CGHRL 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: cghrl %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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%val = load i16, ptr@g
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%src1 = sext i16 %val to i64
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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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