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 32-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 i32 @f1(i32 %src1) {
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; CHECK-LABEL: f1:
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; CHECK: chrl %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 i32
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%cond = icmp slt i32 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i32 %src1, %src1
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br label %exit
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exit:
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%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
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ret i32 %res
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}
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; Check unsigned comparison, which cannot use CHRL.
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define dso_local i32 @f2(i32 %src1) {
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; CHECK-LABEL: f2:
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; CHECK-NOT: chrl
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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 i32
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%cond = icmp ult i32 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i32 %src1, %src1
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br label %exit
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exit:
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%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
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ret i32 %res
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}
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; Check equality.
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define dso_local i32 @f3(i32 %src1) {
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; CHECK-LABEL: f3:
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; CHECK: chrl %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 i32
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%cond = icmp eq i32 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i32 %src1, %src1
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br label %exit
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exit:
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%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
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ret i32 %res
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}
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; Check inequality.
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define dso_local i32 @f4(i32 %src1) {
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; CHECK-LABEL: f4:
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; CHECK: chrl %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 i32
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%cond = icmp ne i32 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i32 %src1, %src1
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br label %exit
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exit:
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%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
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ret i32 %res
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}
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; Repeat f1 with an unaligned address.
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define dso_local i32 @f5(i32 %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: ch %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 i32
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%cond = icmp slt i32 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i32 %src1, %src1
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br label %exit
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exit:
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%res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
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ret i32 %res
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}
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; Check the comparison can be reversed if that allows CHRL to be used.
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define dso_local i32 @f6(i32 %src2) {
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; CHECK-LABEL: f6:
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; CHECK: chrl %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 i32
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%cond = icmp slt i32 %src1, %src2
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br i1 %cond, label %exit, label %mulb
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mulb:
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%mul = mul i32 %src2, %src2
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br label %exit
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exit:
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%res = phi i32 [ %src2, %entry ], [ %mul, %mulb ]
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ret i32 %res
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}
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