26 lines
653 B
LLVM
26 lines
653 B
LLVM
; RUN: llc < %s -O3 -march=x86-64 |FileCheck %s
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define i64 @foo(i64 %data1, i64 %data2, i64 %data3)
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{
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; If constant 4294967295 is hoisted to a variable, then we won't be able to
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; use a shift right by 32 to optimize the compare.
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entry:
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%val1 = add i64 %data3, 1
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%x = icmp ugt i64 %data1, 4294967295
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br i1 %x, label %End, label %L_val2
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; CHECK: shrq $32, {{.*}}
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; CHECK: shrq $32, {{.*}}
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L_val2:
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%val2 = add i64 %data3, 2
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%y = icmp ugt i64 %data2, 4294967295
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br i1 %y, label %End, label %L_val3
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L_val3:
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%val3 = add i64 %data3, 3
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br label %End
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End:
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%p1 = phi i64 [%val1,%entry], [%val2,%L_val2], [%val3,%L_val3]
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ret i64 %p1
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}
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