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https://github.com/c64scene-ar/llvm-6502.git
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b503b49b51
This adds all CodeGen tests for the SystemZ target. This version of the patch incorporates feedback from a review by Sean Silva. Thanks to all reviewers! Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181204 91177308-0d34-0410-b5e6-96231b3b80d8
82 lines
1.7 KiB
LLVM
82 lines
1.7 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 = global i16 1
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; Check signed comparison.
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define i32 @f1(i32 %src1) {
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; CHECK: f1:
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; CHECK: chrl %r2, g
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; CHECK-NEXT: j{{g?}}l
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; CHECK: br %r14
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entry:
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%val = load i16 *@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 i32 @f2(i32 %src1) {
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; CHECK: 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 *@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 i32 @f3(i32 %src1) {
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; CHECK: f3:
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; CHECK: chrl %r2, g
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; CHECK-NEXT: j{{g?}}e
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; CHECK: br %r14
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entry:
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%val = load i16 *@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 i32 @f4(i32 %src1) {
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; CHECK: f4:
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; CHECK: chrl %r2, g
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; CHECK-NEXT: j{{g?}}lh
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; CHECK: br %r14
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entry:
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%val = load i16 *@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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