llvm-project/llvm/test/CodeGen/X86/2004-04-09-SameValueCoalesc...

14 lines
437 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: llvm-as < %s | llc -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
}