mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-10-10 16:24:04 +00:00
7397b2c751
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157058 91177308-0d34-0410-b5e6-96231b3b80d8
73 lines
1.2 KiB
LLVM
73 lines
1.2 KiB
LLVM
; RUN: opt -correlated-propagation -S < %s | FileCheck %s
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declare i32 @foo()
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define i32 @test1(i32 %a) nounwind {
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%a.off = add i32 %a, -8
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%cmp = icmp ult i32 %a.off, 8
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br i1 %cmp, label %then, label %else
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then:
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%dead = icmp eq i32 %a, 7
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br i1 %dead, label %end, label %else
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else:
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ret i32 1
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end:
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ret i32 2
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; CHECK: @test1
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; CHECK: then:
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; CHECK-NEXT: br i1 false, label %end, label %else
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}
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define i32 @test2(i32 %a) nounwind {
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%a.off = add i32 %a, -8
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%cmp = icmp ult i32 %a.off, 8
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br i1 %cmp, label %then, label %else
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then:
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%dead = icmp ugt i32 %a, 15
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br i1 %dead, label %end, label %else
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else:
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ret i32 1
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end:
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ret i32 2
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; CHECK: @test2
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; CHECK: then:
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; CHECK-NEXT: br i1 false, label %end, label %else
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}
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; CHECK: @test3
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define i32 @test3(i32 %c) nounwind {
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%cmp = icmp slt i32 %c, 2
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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ret i32 1
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if.end:
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%cmp1 = icmp slt i32 %c, 3
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br i1 %cmp1, label %if.then2, label %if.end8
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; CHECK: if.then2
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if.then2:
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%cmp2 = icmp eq i32 %c, 2
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; CHECK: br i1 true
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br i1 %cmp2, label %if.then4, label %if.end6
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; CHECK: if.end6
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if.end6:
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ret i32 2
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if.then4:
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ret i32 3
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if.end8:
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ret i32 4
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}
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