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llvm-mirror/test/CodeGen/X86/2004-04-09-SameValueCoalescing.ll
2009-09-08 23:54:48 +00:00

14 lines
427 B
LLVM

; Linear scan does not currently coalesce any two variables that have
; overlapping live intervals. When two overlapping intervals have the same
; value, they can be joined though.
;
; RUN: llc < %s -march=x86 -regalloc=linearscan | \
; RUN: not grep {mov %\[A-Z\]\\\{2,3\\\}, %\[A-Z\]\\\{2,3\\\}}
define i64 @test(i64 %x) {
entry:
%tmp.1 = mul i64 %x, 4294967297 ; <i64> [#uses=1]
ret i64 %tmp.1
}