shift-coalesce.ll   [plain text]

; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel | \
; RUN:   grep {shld.*CL}
; RUN: llvm-as < %s | llc -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
}