llvm-6502/test/CodeGen/X86/2006-01-19-ISelFoldingBug.ll
2007-08-15 13:36:28 +00:00

17 lines
459 B
LLVM

; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 | \
; RUN: grep shld | count 1
;
; Check that the isel does not fold the shld, which already folds a load
; and has two uses, into a store.
%A = external global uint
uint %test5(uint %B, ubyte %C) {
%tmp.1 = load uint *%A;
%tmp.2 = shl uint %tmp.1, ubyte %C
%tmp.3 = sub ubyte 32, %C
%tmp.4 = shr uint %B, ubyte %tmp.3
%tmp.5 = or uint %tmp.4, %tmp.2
store uint %tmp.5, uint* %A
ret uint %tmp.5
}