llvm-6502/test/CodeGen/X86/shift-coalesce.ll
2013-07-31 02:47:52 +00:00

16 lines
504 B
LLVM

; RUN: llc < %s -march=x86 -x86-asm-syntax=intel | \
; RUN: grep "shld.*cl"
; RUN: llc < %s -march=x86 -x86-asm-syntax=intel | \
; RUN: not grep "mov cl, bl"
; PR687
define i64 @foo(i64 %x, i64* %X) {
%tmp.1 = load i64* %X ; <i64> [#uses=1]
%tmp.3 = trunc i64 %tmp.1 to i8 ; <i8> [#uses=1]
%shift.upgrd.1 = zext i8 %tmp.3 to i64 ; <i64> [#uses=1]
%tmp.4 = shl i64 %x, %shift.upgrd.1 ; <i64> [#uses=1]
ret i64 %tmp.4
}